VEREVKIN, Mikhail; VYSOTSKY, Vadim. Current status of the Ladoga ringed seal <em>Pusa hispida ladogensis</em> (Nordquist, 1899). Biological Communications, [S. l.], n. 4, p. 14–25, 2013. Disponível em: https://biocomm.spbu.ru/article/view/1321. Acesso em: 29 mar. 2024.