Nikolsky S.I. ,     Fyodorov V.M. ,     Trubkin Y.A. ,     Vavilov Y.N. About an agreement of the muon energy spectra at sea level to the underground intensity measurement. Pr. FIAH , N132 , с. P.1-11 , 01.1971   Erlykin A.D. ,     Vavilov Y.N. ,     Bazarov E.V. Hadron cascade development in dense material. 16-th Intern. cosmic ray conf. 16-th. 6-18 Aug. 1979. Conf. Papers. Sponsored by Sci. Council of Japan and Phys. Soc. of Japan , Vol.11 , с. P.172-176 , 01.1979   Trubkin Y.A. ,     Vavilov Y.N. ,     Davitaev L.N. ,     Fedorov V.M. Intensity measurements of cosmic rays in water at large depts. Acta phys.acad.sci.hung. , Vol.29 , с. P.53-58 , 01.1970   Vavilov Y.N. ,     Beschapov S.P. ,     Bazarov E.V. ,     Beisembaev R.U. ,     Kayumov F.F. ,     Meshkov E.A. ,     Rivkin Y.A. The investigation of muon groups near the axis of extensive air shower. 13-th Intern. cosmic ray conf. Denver , Vol.3 , с. P.1908-1912 , 01.1973   Nikolsky S.I. ,     Vavilov Y.N. ,     Beschapov S.P. ,     Bazarov E.V. ,     Beisembaev R.U. The observation of muon groups at Tien-Shan station. 14-th Intern. Cosmic Ray Conf. Proc. Munich 1975 , Vol.6 , с. P.2061-2065 , 01.1975   Vavilov Y.N. ,     Beschapov S.P. ,     Bazarov E.V. ,     Vildanova L.I. ,     Beisembaev R.U. The search for directly produced muon pairs in extensive air shower. 15-th Intern. Cosmic Ray Conf. Bulgaria.1977 , Vol.6 , с. P.179-184 , 01.1977   Vavilov Y.N. ,     Beisembaev R.U. On one of the possibilities of investigation of the characteristics of the primary cosmic radiation at superhigh energies. 15-th Intern. Cosmic Ray Conf. Bulgaria.1977 , Vol.11 , с. P.432-438 , 01.1977   Vavilov Y.N. ,     Dedenko L.G. ,     Bazarov E.V. ,     Zheleznykh I.M. The role of nuclear cascades in the interpretation of the experimental data on direct muon production by cosmic ray hadrons in dense material. 16-th Intern. cosmic ray conf. 16-th. 6-18 Aug. 1979. Conf. Papers. Sponsored by Sci. Council of Japan and Phys. Soc. of Japan , Vol.10 , с. P.159-163 , 01.1979   Vavilov Y.N. ,     Beisembaev R.U. ,     Litvinov V.A. Muons from nuclear cascades developing in the atmosphere at large zenith angles. 16-th Intern. cosmic ray conf. 16-th. 6-18 Aug. 1979. Conf. Papers. Sponsored by Sci. Council of Japan and Phys. Soc. of Japan , Vol.10 , с. P.164-168 , 01.1979