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He is known through lexicographical explanations cited by Nathan ben Jehiel, author of the Aruk. Nathan ben Jehiel probably studied under him for some time.
- Marco Mortara, Indice, p. 9;
- Hermann Vogelstein and Paul Rieger, Geschichte der Juden in Rom, i. 358, 362;
- Isaac Hirsch Weiss, Dor, iv. 308, note 9;
- Eliakim Carmoly, in Revue Orientale, ii. 116.