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Review by: Bernhard Lang. (2002). Die letzten Dinge. Himmel, Hölle, Fegefeuer im Mittelalter (Herder Spektrum 471)by Peter Dinzelbacher. Mediaevistik, 15(), 218–219. doi:10.2307/42585877 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research