RUKASOV, V. I.; STEPANETS, O. I. Spaces $S^p$ with Nonsymmetric Metric. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 55, n. 2, p. 264–277, 2003. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3904. Acesso em: 6 dec. 2025.