Emms, M.(1975). A partial wave analysis of the (3π)0 system from the charge exchange reaction π+n→π+π−πop AT 4 GeV/c. Physics Letters B, 60(1), 109-112. doi:10.1016/0370-2693(75)90541-9

Emms, M.J. "A Partial Wave Analysis of the (3π)0 System From the Charge Exchange Reaction π+n→π+π−πop AT 4 GeV/c". Physics Letters B, 60.1 ( 1975 ): 109-112.