Pion-nucleon charge-exchange amplitudes above 2 GeV
  The amplitudes for the pion-nucleon charge exchange reaction of the Karlsruhe-Helsinki and the George-Washington-University partial wave analyses are compared with those of a Regge-cut model with the aim to explore the possibility to provide high energy constraints for theoretical baryon resonance analyses in the energy region above 2 GeV. 
F. Huang, A. Sibirtsev, S. Krewald, C. Hanhart, J. Haidenbauer, U.-G.   Mei{\ss}ner