Neutral Particles in Hadron-Nuclear Interactions at Superhigh Energies Apanasenko, V. A. ; Goryachikh, A. A. ; Goncharova, A. L. ; Ivanenko, M. V. ; Kvochkina, N. T. ; Kotelnikov, A. K. Abstract Publication: 21st International Cosmic Ray Conference (ICRC21) Pub Date: 1990 Bibcode: 1990ICRC....8..141A