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• ABACUS. Repositorio de Producción Científica - Universidad Europea (1)
• Aberystwyth University Repository - Reino Unido (2)
• Adam Mickiewicz University Repository (1)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (1)
• Applied Math and Science Education Repository - Washington - USA (1)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (1)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (6)
• Aston University Research Archive (1)
• Biodiversity Heritage Library, United States (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (10)
• Brock University, Canada (3)
• Bulgarian Digital Mathematics Library at IMI-BAS (2)
• Cambridge University Engineering Department Publications Database (4)
• CentAUR: Central Archive University of Reading - UK (40)
• Center for Jewish History Digital Collections (1)
• Cochin University of Science & Technology (CUSAT), India (2)
• Dalarna University College Electronic Archive (2)
• Digital Commons at Florida International University (1)
• Digital Peer Publishing (2)
• DigitalCommons - The University of Maine Research (3)
• DigitalCommons@The Texas Medical Center (1)
• DigitalCommons@University of Nebraska - Lincoln (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (6)
• Duke University (3)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (2)
• Greenwich Academic Literature Archive - UK (1)
• Helda - Digital Repository of University of Helsinki (6)
• Indian Institute of Science - Bangalore - Índia (11)
• Memoria Académica - FaHCE, UNLP - Argentina (3)
• Ministerio de Cultura, Spain (30)
• National Center for Biotechnology Information - NCBI (2)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (27)
• Queensland University of Technology - ePrints Archive (9)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (37)
• RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (2)
• Universidad Autónoma de Nuevo León, Mexico (4)
• Universidad de Alicante (4)
• Universidad Politécnica de Madrid (4)
• Universitat de Girona, Spain (1)
• Université de Montréal, Canada (5)
• University of Connecticut - USA (1)
• University of Michigan (729)
• University of Southampton, United Kingdom (1)
• University of Washington (1)
• WestminsterResearch - UK (2)