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We derive the set of inversion relations allowing to establish the linkbetween the dual parametrization of GPDs and a broad class of phenomenologicalmodels for GPDs. As an example we consider the results of the calculation ofthe pion GPD in the framework of nonlocal chiral quark model (NlCQM) to recoverthe set of forward-like functions representing this GPD in the framework ofdual parametrization. We also argue that Abel tomography method overlookspossible delta function like contributions to GPD quintessence function makingexplicit contribution to the D from factor.

Forward-like functions for dual parametrization of GPDs from nonlocal chiral quark model