TSIKUNOV, I. K. On a class of isometric transformations of simplex or orthogonal vector spaces . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 18, n. 5, p. 122–127, 1966. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8450. Acesso em: 7 apr. 2025.