R.Shypit1,C.E.Waltham1,D.A.Axen1,F.Entezami1, M.Comyn2,D.Healey2,G.A.Ludgate2,G.D.Wait2,D.V.Bugg3, J.A.Edgington3,N.R.Stevenson3 Univ. of British Columbia, Vancouver, B.C.1 Tri University Meson Facility, Vancouver, B.C.2 Queen Mary College, London3
Physics Letters,Section B124(1983)314