Ospanov, Khabibula, Galymkair Mutanov, B. Arynov, S. Kozhakhmetov, V. Rybakova, N. Ospanova, and A. Baiboldieva. 2012. “Development of the Method for Extraction of Beryllium from Genthelvite Group of Minerals under the Conditions of Processing of Mineral Raw Materials”. Chemical Bulletin of Kazakh National University 66 (2), 89-97. https://doi.org/https://doi.org/10.15328/chemb_2012_289-97.