On weak crytical partially ordered sets relative to positively definite Tits quadratic form. Neliniini Kolyvannya, [S. l.], v. 11, n. 3, p. 396–408, 2008. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/488. Acesso em: 21 jan. 2026.