Explicit model realizing parton-hadron duality
  An explicit model realizing parton-hadron duality and fitting the data is suggested. Complex nonlinear Regge trajectories are important ingredients of the model. The inclusion of $\Delta$ and $N^*$ trajectories should account for all resonances in the direct channel. The exotic trajectory is responsible for the smooth background. 
R. Fiore, A. Flachi, L.L. Jenkovszky, A.I. Lengyel, V.K. Magas