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@article{CMUC_1974__15_3_a5, author = {Petry, Walter}, title = {Nonlinear operator equations and boundary-value problems}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {451--463}, publisher = {mathdoc}, volume = {15}, number = {3}, year = {1974}, mrnumber = {0375024}, zbl = {0289.47033}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1974__15_3_a5/} }
Petry, Walter. Nonlinear operator equations and boundary-value problems. Commentationes Mathematicae Universitatis Carolinae, Tome 15 (1974) no. 3, pp. 451-463. http://geodesic.mathdoc.fr/item/CMUC_1974__15_3_a5/