V.I. Soloviyeva, G.B. Khristiansen, B.A. Khrenov, Yu.A. Nechin, V.I. Atrashkevich, V.A. Dmitriev, Yu. Fomin, S.N. Vernov, G.V. Kulikov,
Primary cosmic-ray component in superhigh energy region Journal of the Physical Society of Japan. ,vol. 17, pp. 118- 121 ,(1962)