• Thermochemical investigations of natural phosphate with ammonium sulphate additivePetchova, V.; Pelovski, Y.; Dombalov, I.; Tõnsuaadu, KaiaICTAC 13 : 13th International Congress on Thermal Analysis and Calorimetry : XXVI Conference AICAT-GICAT : Chia Laguna, September 12-19, 2004 : book of abstracts2004 / p. P2-105A https://www.researchgate.net/publication/243957255_Thermochemical_investigations_of_natural_phosphate_with_ammonium_sulfate_additive