DOS SANTOS, José Manuel Dos Santos. Intersection of two surfaces in GeoGebra. Journal of the GeoGebra International Institute of São Paulo, [S. l.], v. 6, n. 2, p. 04–09, 2017. Disponível em: https://revistas.pucsp.br/index.php/IGISP/article/view/35462. Acesso em: 27 dec. 2025.