Zero Curvature and generalization of Painlev\'e equation from   AKNS/Lund-Regge model
  We explain the relation between the mixed mKdV/sinh-Gordon model and the Kudryashov's equation. Then, we use the mixed AKNS/Lund-Regge model to find a system of ODEs which is candidate to define a new transcendental function. We also applied the perturbative Painlev\'e test and presented the local representation for the solution of the system. 
Danilo V. Ruy and Genilson R. de Melo
nlin.SI