Гизатуллина/Gisatullina Ю. С., and Кузнецова/Kuznetsova М. В. “FORMATION OF BIOFILMS BY UROPATOGENIC STRAINS OF ESCHERICHIA COLI ON VARIOUSABIOTIC SURFACES”. Bulletin of Perm University. Biology, no. 2, Oct. 2018, pp. 185-92, http://press.psu.ru/index.php/bio/article/view/1852.