Katayeva, M., R. Mangazbayeva, and R. Abdykalykova. “Investigation of Complex Formation Processes of Hydroxypropylmethylcellulose and Polymethacrylic Acid in Aqueous Solutions”. Chemical Bulletin of Kazakh National University, no. 1, Dec. 2012, pp. 266-9, doi:https://doi.org/10.15328/chemb_2012_1266-269.