Features of the pion-nucleus interaction at energies of 200 GeV and 60 GeV Erofeeva, I. N. ; Mischenko, L. G. ; Murzin, V. S. ; Sarycheva, L. I. ; Zhdanov, G. B. ; Maslennikova, N. V. ; Tretyakova, M. A. ; Chernyavsky, M. M. Abstract Publication: International Cosmic Ray Conference Pub Date: 1970 Bibcode: 1970ICRC....3..225E