@article{GDZPPN002416093, title = {Two Dimensional Variational Problems with Thin Obstacles.}, journal = {Mathematische Zeitschrift}, volume = {142}, year = {1975}, pages = {279-288}, zbl = {0295.49003}, url = {http://dml.mathdoc.fr/item/GDZPPN002416093} }
Frehse, Jens. Two Dimensional Variational Problems with Thin Obstacles.. Mathematische Zeitschrift, Tome 142 (1975) pp. 279-288. http://gdmltest.u-ga.fr/item/GDZPPN002416093/