A. A. Adkhamov, V. A. Gumovskii, V. I. Lebedev, “On the stability of strongly anharmonic crystal with vacancies”, Dokl. Akad. Nauk SSSR, 255:3 (1980), 557–561
2.
A. A. Adkhamov, V. A. Gumovskii, V. I. Lebedev, “On the theory of a strongly anharmonic crystal with vacancies”, Dokl. Akad. Nauk SSSR, 255:2 (1980), 327–331