UDRIŞTE, C.; CONSTANTINESCU, A.; PRICOPIE, S. TOPOLOGY AND DIFFERENTIAL STRUCTURE ON DESCARTES FOLIUM. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 103, p. 61–69, 2016. Disponível em: https://stipendii.uni-sofia.bg/index.php/fmi/article/view/54. Acesso em: 12 dec. 2024.