Pichugin V. F. Vladimir Fyodorovich, Frangulian T. S., Stoliarenko V. F., & Kim I. W. (1999). Ion irradiation and reduction effects in LiNbO3 single crystals; Korus 99; The 3th Russia-Korean International Symposium on Science and Technology; Vol. 2: Proceedings. 1999.

Pichugin V. F. Vladimir Fyodorovich, Frangulian T. S., Stoliarenko V. F., and Kim I. W. Ion Irradiation and Reduction Effects in LiNbO3 Single Crystals; Korus 99; The 3th Russia-Korean International Symposium on Science and Technology; Vol. 2: Proceedings. 1999, 1999.

Pichugin V. F. Vladimir Fyodorovich, et al. Ion Irradiation and Reduction Effects in LiNbO3 Single Crystals; Korus 99; The 3th Russia-Korean International Symposium on Science and Technology; Vol. 2: Proceedings. 1999, 1999.