by Efremenko, V.I., Gorichev, P.A., Kaftanov, V.S., Kliger, G.K., Kolganov, V.Z., Krutchinin, S.P., Kubantsev, M.A., Makhlyueva, I.V., Shevchenko, V.G., Berge, J.P., Bogert, D., Endorf, R., Hamilton, D., Hanft, R., Malko, J., Harigel, G., Moffatt, G., Nezrick, F.A., Smart, W., Wolfson, J., Ammosov, V.V., Denisov, A.G., Ermolov, P.F., Gapienko, G.S., Gapienko, V.A., Klyukhin, V.I., Koreshev, V.I., Pitukhin, P.V., Rjabov, Y.G., Slobodyuk, E.A., Sirotenko, V.I., Bell, J., Coffin, C.T., Diamond, R.N., French, H., Louis, W., Roe, B.P., Ross, R.T., Seidl, A.A., Sinclair, D.
Published in Physics letters. B (01.07.1979)