CassutoU. M. D. The Destruction of the Rabbinic Academies in South Italy During the Thirteenth Century. Sefer Yuḥasin ספר יוחסין | Review for the History of the Jews in South Italy<Br&gt;Rivista Per La Storia Degli Ebrei Nell’Italia Meridionale, Vol. 6, Oct. 2018, pagg. 47-70, doi:10.6092/2281-6062/5880.