Bukalov, Aleksandr. “The Inhabited Planets Quantity in the Galaxy and Universe According to the SETI. The Civilization Development Strategies”. Physics of Consciousness and Life, Cosmology and Astrophysics 3, no. 1 (March 25, 2003): 5–12. Accessed December 13, 2024. https://physics.socionic.info/index.php/physics/article/view/294.