@article{1256048105, author = {Knerr, Barry F.}, title = {A singular free boundary problem}, journal = {Illinois J. Math.}, volume = {23}, number = {4}, year = {1979}, pages = { 438-458}, language = {en}, url = {http://dml.mathdoc.fr/item/1256048105} }
Knerr, Barry F. A singular free boundary problem. Illinois J. Math., Tome 23 (1979) no. 4, pp. 438-458. http://gdmltest.u-ga.fr/item/1256048105/