ČERNÝ, V., FRUMAROVÁ-PETROVÁ, B., ROSA, Jan, LICHOLIT, I. L., FRUMAR, M. Local symmetry and mutual interaction of Mn2+ ions in glasses. Journal of Non-Crystalline Solids. 1996, 192-193(-), 165-169. ISSN 0022-3093. E-ISSN 1873-4812.