@inproceedings{Keizerov:20127I, author = "Keizerov, Sergey and Rakhmetov, Edward", title = "{The mass spectrum of four-dimensional modes in seven-dimensional Kaluza-Klein theory with a spontaneous compactification solution of Freund-Rubin type}", doi = "10.22323/1.138.0059", booktitle = "Proceedings of The XXth International Workshop High Energy Physics and Quantum Field Theory {\textemdash} PoS(QFTHEP2011)", year = 2012, volume = "138", pages = "059" }