Comparative analysis of the mechanochemical hem activation effect on the microstructure and phase transformations of sedimentary apatitesPetkova, Vilma; Mihaylova, Katerina; Serafimova, Ekaterina; Kaljuvee, TiitJournal of chemical technology and metallurgy2025 / p. 63-74 https://doi.org/10.59957/jctm.v60.i1.2025.6 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Impact of high energy milled activation on the thermal properties of Bulgarian and Estonian natural apatitesPetkova, Vilma; Kostova, Bilyana; Serafimova, Ekaterina; Kaljuvee, Tiit; Tõnsuaadu, Kaia; Pelovski, Yoncho2nd Journal of Thermal Analysis and Calorimetry Conference, Budapest, June    18–21, 2019 : book of abstracts2019 / p. 480-481 https://jtac-jtacc.akcongress.com/

Microstructural and thermal investigations of natural fluorapatite vialong time tribochemical activationPetkova, Vilma; Mihaylova, K.; Serafimova, Ekaterina; Tzvetanova, Y.; Kaljuvee, Tiit; Tõnsuaadu, KaiaJTACC+V4 2025 : 4th Journal of Thermal Analysis and Calorimetry Conference & 10th V4 (Joint Czech-Hungarian-Polish-Slovak) Thermoanalytical Conference : Book of Abstracts2025 / p. 428-429 https://static.akcongress.com/downloads/jtacc/jtacc2025/jtacc2025-boa.pdf

Phase and structural investigations of the content of natural radionuclides in rock and inorganic building materialsSerafimova, Ekaterina; Petkova, Vilma; Kaljuvee, TiitIOP conference series : materials science and engineering2023 / 8 p. : ill https://doi.org/10.1088/1757-899x/1264/1/012003

Thermochemical characterization of chicken litter and peat as a source for energy recoveryPetkova, Vilma; Serafimova, Ekaterina; Kaljuvee, Tiit; Pelovsky, YonchoJournal of thermal analysis and calorimetry2013 / p. 683-692 : ill https://doi.org/10.1007/s10973-012-2771-y Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS