KERTÉSZ , Gábor. A GENERALIZATION OF THE MAIN THEOREM OF THE PROJECTIVE MAPS IN TWO-DIMENSIONAL REAL PLANES Periodica Polytechnica Civil Engineering, [S. l.], v. 27, n. 1-2, p. 89–91, 1983. Disponível em: https://pp.bme.hu/ci/article/view/4026. Acesso em: 18 may. 2024.