RYABCEVA, Y. S. Intraspecific shell variability in gastropods of genus Viviparus from Ukraine. Cherkasy University Bulletin: Biological Sciences Series, [S. l.], v. 295, n. 2, 2016. Disponível em: https://bio-ejournal.cdu.edu.ua/article/view/211. Acesso em: 16 may. 2026.