VERHÓCZKI, László. QUASIPLANAR MAPS BETWEEN THREE-DIMENSIONAL MANIFOLDS Periodica Polytechnica Mechanical Engineering, [S. l.], v. 36, n. 3-4, p. 279–290, 1992. Disponível em: https://pp.bme.hu/me/article/view/5576. Acesso em: 15 may. 2025.