Petkova, P., Vasilev, P. and Nedelcheva, G. (2023) “THE COMPLEXES OF Co2+ IN Bi12SiO20 AND Co3+ IN Bi12TiO20”,
JOURNAL SCIENTIFIC AND APPLIED RESEARCH
, 3(1), pp. 78–83. doi: 10.46687/jsar.v3i1.67.