Индекс запрещённых книг
J. Martínez de Bujanda's "Index Librorum Prohibitorum, 1600–1966" lists the authors and writings in the successive editions of the "Index", while Miguel Carvalho Abrantes's "Why Did The Inquisition Ban Certain Books?: A Case Study from Portugal" tries to understand why certain books were forbidden based on a Portuguese edition of the "Index Librorum Prohibitorum" from 1581.