Ongarbayev, Y., A. Ospanova, R. Abdykalykova, and N. Ashimhan. “Modern State of Educational Process on the Speciality "Сhemistry"”. Chemical Bulletin of Kazakh National University, Vol. 65, no. 1, Mar. 2012, pp. 153-5, doi:https://doi.org/10.15328/chemb_2012_1153-155.