References
- Alyokin, O. A. 1954. Chemical analysis of inland waters. Gidrometeoizdat. Moskva. (In Russian).
- Arinushkina, E. V. 1962. A manual of soil chemical analysis. Izd. “Nauka”, Moskva. (In Russian).
- Ostapenia, A. P. 1968. Biomass and the measures of its expression. — Metody opredeleniya produktsii vodnykh zhivotnykh. Izd. “Vysheyshaya shkola”, Minsk, p. 20–44. (In Russian).
- Prus, T. 1970. Calorific value of animals. — Polskie Arch. Hydrobiol. 17(30), 172, 183–200.
- Winberg, G. G. 1968. Methods for the estimation of production in aquatic animals. Izd. “Vysheyshaya shkola”, Minsk. (In Russian).