We consider the hierarchies of Nonlinear Evolution Equations related to auxiliary problem of Caudrey-Beals-Coifman type. We give a proof that the conservation laws for these equations have local densities based on the theory of the generating operators related to the Caudrey-Beals-Coifman linear problem.
"Locality of the Conservation Laws for the Soliton Equations Related to Caudrey-Beals-Coifman System." J. Geom. Symmetry Phys. 33 91 - 107, 2014. https://doi.org/10.7546/jgsp-33-2014-91-107