Liber secundus - Biel, Gabriel, <1425ca-1495>. (OLS)http://semarc/name/10052; Sievers, Volker. (OLS)http://semarc/name/67507; Hofmann, Udo. (OLS)http://semarc/name/10057; Werbeck, Wilfrid. (OLS)http://semarc/name/10056; Steiger, Renata. (OLS)http://semarc/name/10055 (Collectorium circa quattuor libros Sententiarum, 1984)