• 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/