by Abazov, AI, Anosov, OL, Faizov, EL, Gavrin, VN, Kalikhov, AV, Knodel, TV, Knyshenko, II, II, Kornoukhov, VN, Mezentseva, SA, Mirmov, IN, Ostrinsky, AV, Pshukov, AM, Revzin, NE, Shikhin, AA, Timofeyev, PV, Veretenkin, EP, Vermul, VM, Zatsepin, GT, Bowles, TJ, Cleveland, BT, Elliott, SR, O'Brien, HA, Wark, DL, Wilkerson, JF, Davis, Jr, R, Lande, K, Cherry, ML, Kouzes, RT
Published in Physical review letters (09.12.1991)