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 April 6, 2025. http://116.203.177.230/index.php/AIVP/article/view/14323.