@article{1102947975, author = {Williams, S. A.}, title = {A nonlinear elliptic boundary value problem.}, journal = {Pacific J. Math.}, volume = {49}, number = {2}, year = {1973}, pages = { 767-774}, language = {en}, url = {http://dml.mathdoc.fr/item/1102947975} }
Williams, S. A. A nonlinear elliptic boundary value problem.. Pacific J. Math., Tome 49 (1973) no. 2, pp. 767-774. http://gdmltest.u-ga.fr/item/1102947975/