@article{Althoff:1983te, author = "Althoff, K. H. and others", title = "{Positive Pion Photoproduction From Hydrogen at Photon Energies Between 500-{MeV} and 1400-{MeV} in Forward Direction}", reportNumber = "BONN-HE-83-5", doi = "10.1007/BF01571360", journal = "Z. Phys. C", volume = "18", pages = "199", year = "1983" }