Zhamanbaeva, M., Mariya Abilova, G. Kashkanova, Altynai Mussabekova, and Aiman Shaldybaeva. 2013. “Determination of the Composition and Stability Constants of Complexes in Co (II) - Malic Acid System”. Chemical Bulletin of Kazakh National University 72 (4), 162-67. https://doi.org/https://doi.org/10.15328/chemb_2013_4162-167.