Sinyev, V., L. Levchenko, G. Toxseitova, E. Sakhipov, BatyrbayevaА., and ТоktabayevaА. “Dehydration of Amorphous Calcium-Magnesium Phosphate by Air”. Chemical Bulletin of Kazakh National University, Vol. 73, no. 1, Apr. 2014, pp. 60-68, doi:https://doi.org/10.15328/chemb_2014_160-68.