GEOFIZICHESKIY ZHURNAL, T. To the 60th anniversary of Ivan Mikhaylovich Tsyfra. Geofizicheskiy Zhurnal, [S. l.], v. 39, n. 5, p. 105–109, 2017. DOI: 10.24028/gzh.0203-3100.v39i5.2017.133398. Disponível em: http://journals.uran.ua/geofizicheskiy/article/view/133398. Acesso em: 27 may. 2022.