전자저널의 알파벳순 리스트
Journal Name | ISSN | Coverage | URL | Note | Provider |
---|---|---|---|---|---|
Revista Interamericana de Educación de Adultos | 2448-7384 | 2016~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Intercontinental de Psicología y Educación | 1665-756X | 2008~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Interdisciplinar Científica Aplicada | 1980-7031 | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Internacional de Ciências | 2014~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Internacional de Cultura Visual | 2019~2019 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Internacional de Educación en Ingeniería | 2008~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Internacional de Educacion y Aprendizaje | 2255-453X | 2014~2020 | URL | EBSCOhost Education Source | |
Revista Internacional de Estudios de Derecho Procesal y Arbitraje | 2014~2014 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Internacional de Folkcomunicação | 1807-4960 | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Internacional de Investigación en Ciencias Sociales | 2226-4000 | 2013~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Internacional de Psicología | 1818-1023 | 2016~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Internacional de Relaciones Públicas | 2174-3681 | 2013~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Internacional de Seguridad Social | 1752-1734 | 2007~2013 | URL | EBSCOhost Academic Search Ultimate | |
Revista Internacional de Seguridad Social | 1752-1734 | 2007~2013 | URL | wiley | |
Revista Internacional de Tecnologia Conocimiento y Sociedad | 2174-8985 | 2014~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Internacional de Tecnologías en la Educación | 2019~2020 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Internacional del Trabajo | 1564-9148 | 2002~Present | URL |
1 years |
EBSCOhost Academic Search Ultimate |
Revista Internacional del Trabajo | 1564-9148 | 1999~ | URL | wiley | |
Revista Internacional del Trabajo | 1564-9148 | 2002~Present | URL |
1 years |
EBSCOhost Business Source Complete |
Revista Internacional PEI | 2011~2018 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Intratextos | 2013~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista INVI | 0718-8358 | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Juricada de la Universidad Autonoma de Madrid | 1999~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Jurídica Cesumar, Mestrado | 2176-9184 | 2013~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Jurídica de la Universidad de Palermo | 2012~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Juridica Universidad de Puerto Rico | 2009~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Jurídicas | 2011~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Lasallista de Investigación | 2004~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Latina de Comunicación Social | 1138-5820 | 1998~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Latino-Americana de Enfermagem | 1518-8345 | 2008~2012 | URL | EBSCOhost Academic Search Ultimate | |
Revista Latino-Americana de Geografia e Gênero | 2177-2886 | 2013~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Latinoamericana de Bioética | 2462-859X | 2013~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Latinoamericana de Estudios de Familia | 2215-8758 | 2011~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Latinoamericana de Estudios Educativos | 2448-878X | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Latinoamericana de Metalurgia y Materiales | 2011~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Latinoamericana de Metalurgia y Materiales | 2011~Present | URL | EBSCOhost Engineering Source | ||
Revista Latinoamericana de Patología Clínica y Medicina de Laboratorio | 2012~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Latinoamericana de Psicología | 2007~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista latinoamericana de psicopatologia fundamental | 1984-0381 | 2010~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista latinoamericana de química | 2018~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Latinoamericana de Tecnología Educativa | 1695-288X | 2014~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Letral : Revista Electrónica de Estudios Transatlánticos de Literatura | 1989-3302 | 2017~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista LIDER: Revista Labor Interdisciplinaria de Desarrollo Regional | 2009~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista LIDER: Revista Labor Interdisciplinaria de Desarrollo Regional | 2009~Present | URL | EBSCOhost Engineering Source | ||
Revista Logos Ciencia & Tecnologia | 2422-4200 | 2012~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Mackenzie de Educação Física e Esporte | 1980-6892 | 2002~2016 | URL | EBSCOhost Academic Search Ultimate | |
Revista Mal-estar E Subjetividade | 2175-3644 | 2010~2013 | URL | EBSCOhost Academic Search Ultimate | |
Revista Matemática Complutense | 1988-2807 | 2010~2014 | URL | Springer | |
Revista Matemática Iberoamericana | 2235-0616 | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Med [Colombia] | 1909-7700 | 2021~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Medica de Panama | 2016~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Médica del Centro Hospital Arnaldo Milián Castro | 1995-9494 | 2018~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Medica del IMSS | 2448-5667 | 1998~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Médica Herediana | 1729-214X | 2005~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Medica MD | 2007-2953 | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Memento | 2009~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Mexicana de Análisis Político y Administración Pública | 2007-4638 | 2014~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Mexicana de Anestesiología | 1998~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Mexicana de Ciencias Pecuarias | 2448-6698 | 2010~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Mexicana de Cirugía Pediátrica | 2000~2010 | URL | EBSCOhost Academic Search Ultimate | ||
Revista mexicana de comunicaciâon. | 2000~2016 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Mexicana de Fitopatología | 2007-8080 | 2005~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Mexicana de Ingeniería Biomédica | 2395-9126 | 1998~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Mexicana de Investigación Educativa | 2594-2271 | 2001~Present | URL | EBSCOhost Education Source | |
Revista Mexicana de Investigación Educativa | 2594-2271 | 2001~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Mexicana de Investigación en Psicología | 2007-3240 | 2021~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Mexicana de Neurociencia | 2604-6180 | 2003~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Mexicana de Ortopedia y Traumatología | 1998~2002 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Mexicana de Patologia Clinica | 1998~2011 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Mexicana de Pediatría | 2002~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Mexicana del Caribe | 1996~2005 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Migraciones Forzadas | 2006~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Minelor | 2009~Present | URL | EBSCOhost Engineering Source | ||
Revista Minelor | 2009~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Monografias Ambientais | 2236-1308 | 2012~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Motricidade | 2182-2972 | 2007~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Mundos do Trabalho | 1984-9222 | 2013~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Mutis | 2256-1498 | 2014~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista MVZ Córdoba | 1909-0544 | 2008~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Negotium | 1856-1810 | 2012~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Nera: Núcleo de Estudos, Pesquisas e Projetos de reforma Agrária | 1806-6755 | 2008~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Nordestina de Ecoturismo | 2011~2011 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Nueva Antropología | 2000~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Opera | 2346-2159 | 2006~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Oral | 1999~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista orbis | 1856-1594 | 2014~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Organizações em Contexto | 1982-8756 | 2012~Present | URL | EBSCOhost Business Source Complete | |
Revista Panamericana de Infectología | 1807-3352 | 2012~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Panamericana de Salud Pública = Pan American Journal of Public Health | 1680-5348 | 2008~2013 | URL | EBSCOhost Academic Search Ultimate | |
Revista Panamericana de Salud Pública = Pan American Journal of Public Health | 1680-5348 | 2007~2013 | URL | EBSCOhost Academic Search Ultimate | |
Revista Panorama Económico | 2463-0470 | 2019~Present | URL | EBSCOhost Business Source Complete | |
Revista Paraguaya de Educación | 2010~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Paranaense de Desenvolvimento | 2236-5567 | 2012~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Paulista de Pediatria | 1984-0462 | 2013~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Pensamento Contemporâneo em Administração | 1982-2596 | 2012~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Percurso | 2177-3300 | 2014~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Peruana de Medicina Experimental y Salud Pública | 1726-4642 | 2003~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Peruana de Obstetricia y Enfermería | 2005~2007 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Plurais | 2238-3751 | 2016~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Politecnica | 2256-5353 | 2010~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Portuguesa de Psicanalise | 2184-0016 | 2018~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Portuguesa de Psicologia | 2012~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Práxis Educativa | 1809-4309 | 2010~Present | URL | EBSCOhost Education Source | |
Revista PROFILE: Issues in Teachers' Professional Development | 2256-5760 | 2011~Present | URL | EBSCOhost Education Source | |
Revista Psicogente | 2027-212X | 2011~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Psicologia, Organizacoes E Trabalho = Psicologia, Organizacion y Trabajo = Psychology, Organizations and Work; Rpot | 2012~Present | URL | EBSCOhost Business Source Complete | ||
Revista Puertorriqueña de Psicología | 2010~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Recorte | 1807-8591 | 2010~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Reflexiones | 1659-2859 | 2003~2009 | URL | EBSCOhost Academic Search Ultimate | |
Revista Română de Anatomie Funcţională şi Clinică, Macro şi Microscopică şi Antropologie | 2010~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Română de Biblioteconomie și Știința Informării | 2559-5490 | 2010~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Romana de Bioetica | 2392-8034 | 2013~2015 | URL | EBSCOhost Academic Search Ultimate | |
Revista romana de stiinte politice = Romanian journal of political science / Societatea Academica din Romania. | 2068-7613 | 2003~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Românească pentru Educaţie Multidimensională = Romanian Journal for Multidimensional Education | 2067-9270 | 2012~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Rupturas | 2215-2466 | 2016~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Salusvita | 2003~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Santa Catarina em História | 2012~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Selecciones de Bioética | 2006~2009 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Semestral de Humanidades y Educación | 2006~2008 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Soluciones de Postgrado EIA | 2013~2014 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Subjetividades | 2359-0777 | 2014~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Técnica de la Facultad de Ingeniería Universidad del Zulia | 2477-9377 | 2021~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Telematique | 2013~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Temas | 2012~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Temas Agrarios | 2389-9182 | 2011~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Tempos Históricos | 1983-1463 | 2012~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Teologică | 2013~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Teopráxis | 2763-5201 | 2022~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Territorios | 2215-7484 | 1999~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista tinerilor economişti (The Young Economists Journal) | 2067-0052 | 2009~Present | URL | EBSCOhost Business Source Complete | |
Revista Transilvana de Stiinte Administrative=Transylvanian Review of Administrative Sciences | 2247-8329 | 2009~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Transilvania | 2011~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista UIC - Foro Multidisciplinario de la Universidad Intercontinental | 2008~2013 | URL | EBSCOhost Academic Search Ultimate | ||
Revista UNIFAMMA | 2013~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Univap Online | 2237-1753 | 2014~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Universidad Eafit | 2018~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Universidade Guarulhos Geociências | 1413-3210 | 2009~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Universo Contabil | 2008~Present | URL | EBSCOhost Business Source Complete | ||
Revista Urutágua | 2012~2018 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Vasca de Derecho Procesal y Arbitraje | 2018~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revista Vector | 2011~2017 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Venezolana de Análisis de Coyuntura | 2665-010X | 2021~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Verde de Agroecologia e Desenvolvimento Sustentável | 1981-8203 | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Veritas | 2006~2011 | URL | EBSCOhost Academic Search Ultimate | ||
Revista Vórtex | 2317-9937 | 2013~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista Vox Juris | 2521-5280 | 2005~Present | URL | EBSCOhost Academic Search Ultimate | |
Revista: Harvard Review of Latin America | 1541-1451 | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Revizni a Posudkove Lekarstvi | 2011~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revolution | 2008~2009 | URL | EBSCOhost Business Source Complete | ||
Revolution: The Journal for RNs & Patient Advocacy | 2002~2006 | URL | EBSCOhost Academic Search Ultimate | ||
Revue Africaine de Chirurgie et Spécialités | 2018~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revue Africaine de la Democratie et de la Gouvernance | 2017~2020 | URL | EBSCOhost Academic Search Ultimate | ||
Revue Aletheia | 2021~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revue Banque | 2650-1511 | 2005~Present | URL |
6 months |
EBSCOhost Business Source Complete |
Revue d'Allemagne et des Pays de Langue Allemande | 2605-7913 | 2007~Present | URL |
6 months |
EBSCOhost Business Source Complete |
Revue d'économie financière | 1777-5744 | 2005~Present | URL | EBSCOhost Business Source Complete | |
Revue D'interaction Homme-Machine | 2012~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revue de l'OCDE sur la gestion budgetaire | 1684-3525 | 2002~2004 | URL | EBSCOhost Business Source Complete | |
Revue de l'OCDE sur le droit et la politique de la concurrence | 1684-3452 | 2002~2011 | URL | EBSCOhost Business Source Complete | |
Revue de médecine périnatale | 1965-0841 | 2009~2021 | URL | EBSCOhost Academic Search Ultimate | |
Revue de médecine périnatale | 1965-0841 | 2009~2013 | URL | Springer | |
Revue de Synthèse | 1955-2343 | 2017~ | URL | Brill Journal Collection | |
Revue des Bioressources | 2013~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revue des Composites et des Matériaux Avancés | 1958-5799 | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Revue Des Etudes De La Langue Francaise | 2322-469X | 2014~Present | URL | EBSCOhost Academic Search Ultimate | |
Revue des sciences de l'eau / Journal of Water Science | 1718-8598 | 2020~2020 | URL | EBSCOhost Academic Search Ultimate | |
Revue des Traditions Musicales Mondes Arabes & Mediterraneen | 2014~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revue dEtudes Francophones | 2012~2012 | URL | KISS | ||
Revue du Nouvel-Ontario | 1918-7505 | 2017~Present | URL | EBSCOhost Academic Search Ultimate | |
Revue du Portrait | 2016~2018 | URL | EBSCOhost Academic Search Ultimate | ||
Revue d’études comparatives Est-Ouest | 2259-6100 | 2013~2017 | URL | EBSCOhost Academic Search Ultimate | |
Revue économique de l'OCDE | 1684-3444 | 2002~2008 | URL | EBSCOhost Business Source Complete | |
Revue électronique suisse de science de l'information (RESSI) | 1661-1802 | 2010~Present | URL | EBSCOhost Academic Search Ultimate | |
Revue Finance, Contrôle, Stratégie : FCS | 2261-5512 | 2005~Present | URL |
1 years |
EBSCOhost Business Source Complete |
Revue française de gestion | 1777-5663 | 2005~Present | URL | EBSCOhost Business Source Complete | |
Revue Française du Marketing | 2001~2017 | URL | EBSCOhost Business Source Complete | ||
Revue Gouvernance | 1912-0362 | 2011~Present | URL | EBSCOhost Academic Search Ultimate | |
Revue Internationale de Géomatique | 2116-7060 | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Revue Internationale de l'Achat | 2001~2004 | URL | EBSCOhost Business Source Complete | ||
Revue Internationale de Sécurité Sociale | 1752-1718 | 2007~2013 | URL | EBSCOhost Business Source Complete | |
Revue internationale de s챕curit챕 sociale | 1752-1718 | 2007~2013 | URL | wiley | |
Revue Internationale du Travail | 1564-9121 | 2002~Present | URL |
1 years |
EBSCOhost Business Source Complete |
Revue internationale du Travail | 1564-9121 | 1999~ | URL | wiley | |
Revue management & avenir | 1969-6574 | 2006~Present | URL | EBSCOhost Business Source Complete | |
Revue Medicale des Grands Lacs = Great Lake Medical Review | 2304-0149 | 2016~Present | URL | EBSCOhost Academic Search Ultimate | |
Revue multidisciplinaire sur l'emploi, le syndicalisme et le travail | 1918-9354 | 2014~Present | URL | EBSCOhost Business Source Complete | |
Revue Nature et Technologie = Nature & Technology Journal | 2437-0312 | 2011~Present | URL | EBSCOhost Academic Search Ultimate | |
Revue Roumaine de Géographie | 2013~Present | URL | EBSCOhost Academic Search Ultimate | ||
Revue Sciences de Gestion | 2007~2011 | URL | EBSCOhost Business Source Complete | ||
Revue Valaque d'Etudes Economiques | 2392-8115 | 2013~2017 | URL | EBSCOhost Business Source Complete | |
RFID Journal | 2011~2014 | URL | EBSCOhost Business Source Complete | ||
Rheologica Acta | 1435-1528 | 1958~2014 | URL | Springer | |
Rhetoric of Health and Medicine | 2573-5063 | 2018~Present | URL | EBSCOhost Academic Search Ultimate | |
Rhetoric, Politics & Culture | 2693-7549 | 2021~Present | URL | EBSCOhost Academic Search Ultimate | |
Rhetorik | 1865-9160 | 1995~2021 | URL | Oldenbourg Wissenschaftsverlag | |
rheuma plus | 2191-2610 | 2011~2013 | URL | Springer | |
Rheumatology | 1462-0332 | 1996~ | URL | Oxford University Press | |
Rheumatology and Therapy | 2198-6584 | 2015~Present | URL | EBSCOhost Academic Search Ultimate | |
Rheumatology International | 1437-160X | 1981~2014 | URL | Springer | |
Rheumatology Reports | 2036-752X | 2009~2009 | URL | EBSCOhost Academic Search Ultimate |