Bekbayeva, L., E.-S. Negim, G. Yeligbayeva, and Ganjian Е. “The Effect of Blend Copolymers on Physico-Mechanical Properties of Mortar”. Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources, vol. 311, no. 4, Oct. 2019, pp. 5-11, doi:10.31643/2019/6445.32.