Nikolsky S.I. , Efimov N.N. , Krasilnikov D.D. , Shamsutdinova F.K. Atmospheric effects and sideral variations of E.A.S.. Can. J. Phys. , Vol.46,N10,pt.1 , с. P.84-85 , 01.1968 Nikolsky S.I. , Khristiansen G.B. , Efimov N.N. , Krasilnikov A.D. , Egorov T.A. , Mikhailov A.A. , Pravdin M.I. Cosmic ray anisotropy with Eo>10~17 eV. I-93843 Intern. cosmic ray conf. Aug. 2-15, 1987. Moscow, USSR. Conf.Papers. , Vol.2 , с. P.41-44 , 01.1987