Comparative study of the thermal behavior of mechanoactivated natural carbonate substituted apatites from Africa (Tunisia), Europe (Bulgaria, Estonia), and Asia (Uzbekistan)Petkova, Vilma; Kaljuvee, Tiit; Tõnsuaadu, Kaia; Serafimova, E.; Dombalova, I.; Pelovski, Y.ESTAC10 : 10th European Symposium on Thermal Analysis and Calorimetry : August 22-27, 2010, Rotterdam, The Netherland : abstract book2010 / p. 189