Elastic backward scattering of negative pions by protons at 25 and 38 GeV/c Babaev, A. I. ; Brakhman, É. V. ; Galaktionov, Yu. V. ; Gorodkov, Yu. V. ; Danilov, M. V. ; Eliseev, G. P. ; Ermilov, A. I. ; Zel'Dovich, O. Ya. ; Laptin, L. P. ; Lyubimov, V. A. ; Nagovitsyn, V. V. ; Plyaskin, V. V. ; Sopov, V. S. ; Tikhomirov, I. N. ; Tsvetkova, T. N. ; Shepelev, V. V. ; Shumilov, E. V. Abstract Publication: Soviet Journal of Experimental and Theoretical Physics Letters Pub Date: April 1977 Bibcode: 1977JETPL..25..367B