Popov, Valery, and Irina Krajnjuchenko. “Generality of Psychical Phenomenon in the Universe”. Physics of Consciousness and Life, Cosmology and Astrophysics 8, no. 4 (December 25, 2008): 58–61. Accessed April 19, 2025. https://physics.socionic.info/index.php/physics/article/view/425.