@article{SpecknerAntonDrachenfelsetal.2004,
  author    = {Speckner, T. and Anton, G. and Drachenfels, W. von and Frommberger, F. and Helbing, K. and Hoffmann, M. and Kiel, B. and Michel, T. and Naumann, J. and Zeitler, G.},
  title     = {The GDH-Moeller-Polarimeter at ELSA},
  series = {Nuclear Instruments and Methods in Physics Research Section},
  journal   = {Nuclear Instruments and Methods in Physics Research Section},
  number    = {A 519},
  doi       = {10.1016/j.nima.2003.11.016},
  pages     = {518 -- 531},
  year      = {2004},
  language  = {en}
}
@article{AhrensKiel2004,
  author    = {Ahrens, J. and Kiel, B.},
  title     = {Helicity dependence of the \&\#947; p-> N \&\#960; channels and multipole analysis in the \&\#916; region},
  series = {European Physical Journal},
  journal   = {European Physical Journal},
  number    = {A 21},
  pages     = {323 -- 333},
  year      = {2004},
  language  = {en}
}