@book{Zeitler1991, author = {P. Zeitler}, title = {Erinnerungen an Elsa Gindler. Berichte, Briefe, Gespr{\"a}che mit Sch{\"u}lern, ed. by P. Zeitler, M{\"u}nchen (Uni-Druck) 1991, 145 p.}, year = {1991}, }