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• Academic Archive On-line (Stockholm University; Sweden) (1)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
• Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (1)
• Bulgarian Digital Mathematics Library at IMI-BAS (1)
• CUNY Academic Works (1)
• Duke University (1)
• Harvard University (1)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (1)
• Queensland University of Technology - ePrints Archive (945)
• University of Michigan (37)
• University of Queensland eSpace - Australia (2)
• USA Library of Congress (2)