M. Dimitrova-Pankova

Infrared spectra of Cu(II)-Co(II) mixed hydroxide nitrates

K. Petrov, N. Zotov, K. Petrov, 1990 .

Infrared spectral investigation of the influence of modifying oxides on the structure of tellurite glasses

Y. Dimitriev, V. Dimitrov, M. Arnaudov, 1989 .

IR-spectral investigation of glasses of the TeO22GeO2 system

Y. Dimitriev, V. Dimitrov, C. Petkov, 1989 .