Ospanova, Zhanar, Kuanyshbek Musabekov, Zh. Toktarbay, M. Issakhov, and O. Koblanova. 2012. “Preparation of New Foam Based on Keratin Wool”. Chemical Bulletin of Kazakh National University 67 (3), 206-9. https://doi.org/https://doi.org/10.15328/chemb_2012_3206-209.