PAIVA, Gerson; TAFT, Carlton A. Color Distribution of Light Balls in Hessdalen Lights Phenomenon. Journal of Scientific Exploration, [S. l.], v. 25, n. 4, 2011. Disponível em: https://www.journalofscientificexploration.org/index.php/jse/article/view/367. Acesso em: 14 may. 2026.