HEYFETZ, Eduard O. Proof of Euclid’s fifth postulate and the establishment of the metaphysical foundations of the so-called space (metametry). Nexo Revista Científica, [S. l.], v. 34, n. 01, p. 280–309, 2021. DOI: 10.5377/nexo.v34i01.11306. Disponível em: https://www.camjol.info/index.php/NEXO/article/view/11306. Acesso em: 5 dec. 2025.