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M. Cheggag, Ecole Nationale Polytechnique d'Oran, Oran, Alg erie, mustapha.cheggag@enp-oran.dz, A. Favini, Dipartimento di Matematica, Universit a degli Studi di Bologna, Bologna, Italia, favini@dm.unibo.it, R. Labbas, Normandie Univ, Le Havre, France, rabah.labbas@univ-lehavre.fr, S. Maingot, Normandie Univ, Le Havre, France, stephane.maingot@univ-lehavre.fr, Kh. Ould Melha, Laboratoire de Math ematiques Pures et Appliqu ees, Universit e Abdelhamid Ibn Badis, Mostaganem, Alg erie, ould_melha_khel@yahoo.fr

New Results on Complete Elliptic Equations with Robin Boundary Coefficient-Operator Conditions in Non Commutative Case