1. Izvestiya Akademii Nauk SSSR;Reut;Seriya Fizicheskaya,1979
2. Izv. Akad. Nauk SSSR;Reut;Ser. Fizi.,1985
3. M. Böhm et al., in: S. Baccaro, B. Borgia, I. Dafinei, E. Longo (Eds.), Proceedings of the International Workshop on Tungstate Crystals, Roma, 12-14 October, 1998, Università degli Studi La Sapienza, Rome, 1999, pp. 141–145.