Яков Кротов. Путешественник по времени.
Вспомогательные материалы: Византия.
Strangers to Themselves: the Byzantine Outsider. Ed. Dion Smithe. Aldershot: Ashgate, 2000. 279 pp.
Papers from the Thirty-second Spring Symposium of Byzantine Studies, University of Susex, Brighton, March 1998. - (Society for the Promotion of Byzantine Studies Publication: 8)
Опись А, №40942.