Measurement of the differential cross-section for pi- p —> n pi0 at 317, 452, and 491 mev/c - Berardo, P. A.; Haddock, R. P.; Nefkens, B. M. K.; Verhey, L. J.; Zeller, M. E.; Parsons, A. S. L.; Truoel, Peter (Phys. Rev. D, 1972)