Dobrotin N.A. , Zacepin G.T. , Nikol'skij S.I. Interaction of ultra high energy particles with Nucleons and Atomic Nuclei. Nuovo Cimento , Suppl.,Ser.X,Vol.3,N4 , с. P.635-651 , 01.1956 Nikol'skij S.I. , Nesterova N.M. , Nikolsky S.I. , Tukish E.I. , Cherdyntseva K.V. , Chubenko A.P. , Dubovy A.G. , Yakovleva T.I. , Vildanov N.G. , Krutikova N.P. X-ray film chamber with carbon target of Tien-Shan complex array. II-19331 19th Intern.cosmic ray conf. La Jolla, USA, Aug.11-23, 1985.Conf.papers , Vol.6 , с. P.254-257 , 01.1985