NESSET, Tore. Schwa in Contemporary Standard Russian. Poljarnyj vestnik, Tromsø, Norway, v. 3, p. 49–63, 2000. DOI: 10.7557/6.1417. Disponível em: https://septentrio.uit.no/index.php/vestnik/article/view/1417. Acesso em: 22 apr. 2026.