^ 3.03.1Davidovich, R. L.; Medkov, M. A. Zirconium and hafnium diselenates. Koordinatsionnaya Khimiya, 1975. (1) 11: 1478-1480. ISSN: 0132-344X.
^Davidovich, R. L.; Medkov, M. A. Selenatofluoride complex compounds of zirconium and hafnium. Koordinatsionnaya Khimiya, 1975. 1 (12): 1646-1653. ISSN: 0132-344X.