N. N. Donets, I. E. Sokolova, A. A. Moskalenko, A. L. Drobina, and A. I. Vinnikov, “Monitoring of opportunistic and pathogenic microorganisms in surgical departments of Dniprodzerzhynsk”, Regul. Mech. Biosyst., vol. 4, no. 1, pp. 23-29, Mar. 2013.