1. 1. Butenko R. G. Isolated tissue culture and physiology of plant morphogenesis, 272 p. (Nauka, Moscow, 1964) [in Russian].
2. Gravimorphogenesis of the protonema of leaf moss.;Demkiv;Dop NAN Ukrai ny Ser Biol No,1998
3. Polarity of cell permeability and its control by phytochrome.;Demkiv;Biofizika,1977
4. 4. Lazarenko A. S., Kovalenko A. P., Pashuk H. T. Some spiral structures are protonemias of deciduous mosses. Ukr. botan. zhurn., 18 (6), 89—98 (1961) [in Ukrainian].
5. 5. Lakin G. F. Biometrics, 352 p. (Vyssh. shk., Moscow, 1990) [in Russian].