Antonov, Alexander Alexandrovich. “Geophysical Researches of Portals Will Allow to Discover Invisible Universes and Explore Them”. European Journal of Applied Sciences 11, no. 2 (April 5, 2023): 370–391. Accessed December 3, 2024. http://804474.wannyin.cyou/index.php/AIVP/article/view/14323.