Rubtsov V.I. , Baradzei L.T. , Smorodin Y.A. , Soloviov M.V. Absorption of high energies nucleons in the atmosphere. II-8632 Intern. conf. on cosmic rays. Jaipur, Dec. 1963. Proc. V.5. High energy interactions. / Ed. R.R.Daniel, P.J.Lavakare, M.G.K.Menon a.o. , Vol.5 , с. P.283-290 , 01.1963