Temurot be-todaʿtam ha-ʿatsmit shel yehude Tsarfat ben shenot ha-20 ṿe-reshit shenot ha-60 shel ha-meʾah ha-19 : (ha-reḳaʿ ha-ḥevrati ṿe-ha-ideʼi shel "kol Yiśraʾel ḥaverim") - Grets, Mikhaʾel (Verfasser) (The Jewish National and University Library, 1972)