MAKEEV, Vladimir V. Planar sections of 3-dimensional cylinders. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, [S. l.], v. 3, n. 4, p. 624–626, 2020. Disponível em: https://math-mech-astr-journal.spbu.ru/article/view/8667. Acesso em: 19 may. 2024.