LÖNNGREN, Lennart. Валентностный банк – пожалуйста!(A valency bank - please!). Poljarnyj vestnik, Tromsø, Norway, v. 13, p. 11–14, 2010. DOI: 10.7557/6.1261. Disponível em: https://septentrio.uit.no/index.php/vestnik/article/view/1261. Acesso em: 3 may. 2026.