1. Archakov, A.I., Mikrosomal'noe okislenie (Microsomal Oxidation), Moscow: Nauka, 1975.
2. Bakkal, S.N., On the Death of Chicks from Parasitic Flies in Passerine Birds, Vestn. Leningr. Univ., 1980, no. 2, pp. 106–108.
3. Bel'skii, E.A. and Stepanova, Z.L., On the Influence of Industrial Pollution on Chick Health in Forest Hole-Nesting Birds, Chteniya pamyati professora V.V. Stanchinskogo (Professor V.V. Stanchinskii Memorial Lectures), Smolensk, 1995, no. 2, pp. 96–99.
4. Bel'skii, E.A., Bezel', V.S., and Lyakhov, A.G., Characteristics of the Reproductive Indices of Birds Nesting in Tree Hollows under Conditions of Technogenic Pollution, Ekologiya, 1995, no. 2, pp. 146–152.
5. Bezel', V.S., Pozolotina, V.N., Bel'skii, E.A., and Zhuikova, T.V., Variation in Population Parameters: Adaptation to Toxic Environmental Factors, Ekologiya, 2001, no. 6, pp. 447–453.