We calculate the cosmic ray muon flux at ground level using the model
of primary cosmic ray spectra suggested by Zatsepin and Sokolskaya.
The model supposes contributions to the cosmic ray flux of three classes
of sources - the shocks from exploding stars, nova and supernova of
different types. The model is supported by the new data obtained in the
ATIC-2 balloon experiment. Present muon flux calculation is based on the
method for solution of atmospheric hadron cascade equations in which
we take into account rising total inelastic cross-sections of hadron-nuclear
interactions as well as non-power-law character of the primary cosmic
ray spectrum. The calculated muon spectrum is compared with recent
experimental data of L3+Cosmic and CosmoALEPH as well as other experiments
and calculations.

Proceedings of the 30th International Cosmic Ray Conference; Rogelio Caballero, Juan Carlos D'Olivo, Gustavo Medina-Tanco, Lukas Nellen, Federico A. Sánchez, José F. Valdés-Galicia (eds.); Universidad Nacional Autónoma de México, Mexico City, Mexico, 2008; Vol. 5 (HE part 2), pages 1511-1514