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