β Decay of the Pion Impeduglia, G. ; Plano, R. ; Prodell, A. ; Samios, N. ; Schwartz, M. ; Steinberger, J. Abstract Publication: Physical Review Letters Pub Date: October 1958 DOI: 10.1103/PhysRevLett.1.249 Bibcode: 1958PhRvL...1..249I