Addendum to "A Phenomenological Description of pi- Delta++   photoproduction and electroproduction in nucleon resonance region"
  We acknowledge a paper on the same subject by other authors, that we didn't have the chance to cite in our work. A few comments on the content of the two papers are made. 
M. Ripani, V. Mokeev, M. Anghinolfi, M. Battaglieri, G. Fedotov, E.   Golovach, B. Ishkhanov, M. Osipenko, G. Ricco, V. Sapu...