Photoproduction of π0 mesons off neutrons in the nucleon resonance region. - Dieterle M; Keshelashvili I; Ahrens J; Annand JR; Arends HJ; Bantawa K; Bartolome PA; Beck R; Bekrenev V; Braghieri A; Branford D; Briscoe WJ; et al. (Physical review letters, 2014)