Umerzakova, M., B. Donenov, Z. Kainarbaeva, A. Kartay, and R. Sarieva. “Pilot Production of Spirulina Biomass and Obtaining of Novel Biodegradable Surfactants”. Eurasian Chemico-Technological Journal, Vol. 22, no. 3, Sept. 2020, pp. 219-26, doi:10.18321/ectj973.