MATUZEVIČIUS, A. Die Schnittflächen in zweimaliger Faserung. Lithuanian Mathematical Journal, [S. l.], v. 4, n. 4, p. 517–528, 1964. DOI: 10.15388/LMJ.1964.19526. Disponível em: https://www.journals.vu.lt/LMJ/article/view/19526.. Acesso em: 19 jul. 2024.