ALEXANDER, John B. Forbidden Science 4: The Spring Hill Chronicles. The Journals of Jacques Vallee, 1990-1999 by Jacques Vallee. Journal of Scientific Exploration, [S. l.], v. 33, n. 3, 2019. Disponível em: https://www.journalofscientificexploration.org/index.php/jse/article/view/1559. Acesso em: 14 may. 2026.