Reformulation of Some Finite Raytracing Equations Through Quadric Surfaces of Revolution. Al-Nahrain Journal of Science, [S. l.], v. 15, n. 4, p. 144–147, 2012. Disponível em: https://anjs.edu.iq/index.php/anjs/article/view/600.. Acesso em: 3 jul. 2024.