Shimon Yakerson. Ozar Sepharad - Sefardskaia sokrovishchnitsa. Sefardskaia kniga X-XV vv. Ot rukopisnoi k pechatnoi traditsii. [Ozar Sepharad: Sephardic treasury. Sephardic Books from the Tenth to the Fifteenth Century. From Manuscripts to Printed Books] - St. Petersburg: Filologicheskii fakul’tet SPb. gosudarstvennogo universiteta, 2015. - 127 pp - PDF (英文)