Meḥḳarim be-toldot Yehude Ashkenaz : sefer yovel li-khevod Yitsḥaḳ (Ariḳ) Zimer = Studies on the history of the Jews of Ashkenaz - Bacon, Gershon C. (Herausgeber); Zimmer, Eric (Gefeierter) (Bar-Ilan University Press, 2008)