@article{CMUC_1986__27_2_a9, author = {Quittner, Pavol and \v{Z}ubrini\'c, Darko}, title = {On the unique solvability of nonresonant elliptic equations}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {301--306}, publisher = {mathdoc}, volume = {27}, number = {2}, year = {1986}, mrnumber = {857550}, zbl = {0603.35035}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1986__27_2_a9/} }