PRUSIŃSKA, A.; SZCZERBA, L. Geometry as an extension of the group theory. Logic and Logical Philosophy, [S. l.], v. 10, n. 10, p. 131–135, 2004. DOI: 10.12775/LLP.2002.008. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2002.008. Acesso em: 24 apr. 2024.