12Davidovich, R. L.; Medkov, M. A. Zirconium and hafnium diselenates. Koordinatsionnaya Khimiya, 1975. (1) 11: 1478–1480. ISSN0132-344X.
↑Davidovich, R. L.; Medkov, M. A. Selenatofluoride complex compounds of zirconium and hafnium. Koordinatsionnaya Khimiya, 1975. 1 (12): 1646–1653. ISSN0132-344X.