Items where Author is "Petkova, Vilma"

Kostova, Bilyana and Petkova, Vilma and Stoyanov, Ventseslav and Uzunov, Zhivko (2021) The effect of high energy milling and high-thermal treatment on the structure and thermal decomposition of minerals from natural CaO-SiO2-P2O5 ceramic system. Materials Today Communications (26). pp. 1-9. ISSN 2352-4928

Kostova, Bilyana and Petkova, Vilma and Stoyanov, Ventseslav (2020) High energy milling activation time dependence of the mass loss during phase thermal decomposition of quartz, calcite and apatite. Списание на Българското геологическо дружество = Review of the Bulgarian geological society, 81 (3). pp. 40-42. ISSN 0007-3938

Kostova, Bilyana and Dumanov, Boyan and Uzunov, Zhivko and Stoyanov, Ventseslav and Petkova, Vilma (2020) Investigation of medieval mortar and wall plaster from water reservoir by the fortified settlement at Mirkovo village, Bulgaria. Списание на Българското геологическо дружество = Review of the Bulgarian geological society, 81 (3). pp. 265-267. ISSN 0007-3938