ŽIAUKIENĖ, S. On positional connections of central punctors space. Lithuanian Mathematical Journal, [S. l.], v. 11, n. 4, p. 795–808, 1971. DOI: 10.15388/LMJ.1971.21034. Disponível em: https://www.journals.vu.lt/LMJ/article/view/21034.. Acesso em: 4 may. 2024.