1. Evolution and ecology of parthenogenesis in earthworms;Jaenike;Amer,1979
2. 2. Viktorov, A.G. (1993). Polyploid race variety in the earthworms family Lumbricidae. Uspekhi sovremennoĭ biologii, 113, No. 3, pp. 304-312 (in Russian).
3. 3. Vsevolodova-Perel, T.S. (1997). The earthworms in the fauna of Russia. Cadastre and the key. Moskow: Nauka (in Russian).
4. 4. Mezhzherin, S.V., Garbar, O.V., Vlasenko, R.P., Оnishchuk, I.P., Коtsyuba, I.Y. & Zhalay, O.I. (2018). Evolutionary paradox of parthenogenetic earthworms. Kyiv: Naukova Dumka (in Russian).
5. 5. Muldal, S. (1952). The chromosomes of the earthworms: I. The evolution of polyploidy. Heredity, 6, No. 1, pp. 56-76. https://doi.org/10.1038/hdy.1952.4