SORENSEN, Richard. Speculations on the True Holy Grail. Journal of Scientific Exploration, [S. l.], v. 36, n. 4, p. 540–587, 2023. DOI: 10.31275/20222443. Disponível em: https://journalofscientificexploration.org/index.php/jse/article/view/2443. Acesso em: 24 apr. 2026.