SZIRMAY-KALOS, László. APPLICATION OF VARIATIONAL CALCULUS IN THE RADIOSITY METHOD Periodica Polytechnica Electrical Engineering, [S. l.], v. 40, n. 2, p. 123–138, 1996. Disponível em: https://pp.bme.hu/ee/article/view/4430. Acesso em: 20 jul. 2025.