@article {1999, title = {Some properties of the solutions of obstacle problems with measure data}, journal = {Ricerche Matematiche., Supplemento dedicato a Ennio De Giorgi, vol. 48 (1999), page : 99-116}, year = {1999}, url = {http://hdl.handle.net/1963/6432}, author = {Paolo Dall{\textquoteright}Aglio and Gianni Dal Maso} }