by Huang, H.Z., Beedoe, S., Bougteb, M., Cailiu, J., Carroll, J., Hallman, T., Heilbronn, L., Igo, G., Kirk, P., Krebs, G., Letessier-Selvon, A., Luttrell, B., Manso, F., Madansky, L., Matis, H.S., Miller, D., Miller, J., Naudet, C., Porter, R.J., Roche, G., Schoeder, L.S., Seidl, P.A., Wang, Z.F., Welsh, R., Wilson, W.K., Yegneswaran, A.
Published in Physics letters. B (31.12.1992)