Historisches Wörterbuch der Philosophie - Bien, Günther. (OLS)http://ftis/name/52334; Gabriel, Gottfried. (OLS)http://ftis/name/52337; Gründer, Kalfried. (OLS)http://ftis/name/52336; Ritter, Joachim. (OLS)http://ftis/name/52335 (Schwabe, 1971)
Sottoscrizione.