Gogberashvili, M. (1998). Hierarchy problem in the shell universe model. International Journal of Modern Physics D. 11 (10): 1635—1638. arXiv:hep-ph/9812296. doi:10.1142/S0218271802002992.
Gogberashvili, M. (1998). Hierarchy problem in the shell universe model. International Journal of Modern Physics D. 11 (10): 1635—1638. arXiv:hep-ph/9812296. doi:10.1142/S0218271802002992.