Daulbayev, C., G. Mitchell, A. Zakhidov, F. Sultanov, and Z. Mansurov. “Obtaining of Biologically Soluble Membranes Based on Polymeric Nanofibres and Hydroxyapatite of Calcium”. Eurasian Chemico-Technological Journal, Vol. 20, no. 2, May 2018, pp. 119-24, doi:10.18321/ectj690.