HALAKHAH AND LAW IN THE PERIOD OF THE GEONIM - Libson, Gideon (Hecht, Neil S. (edt), Jackson, Bernard S. 1944- (edt), Passamaneck, S. M. (edt), Piatelli, Deborah A. 1959- (edt), Râbêllô, Alfredô Mordeḵay 1940- (edt), An introduction to the history and sources of Jewish law, 1996)