VASYUNYK, I. S.; ZABAVSKII, B. V. Rings of almost unit stable rank 1. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 6, p. 840–843, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2767. Acesso em: 14 apr. 2025.