@article {1989,
	title = {Limits of obstacle problems for the area functional.},
	journal = {Partial differential equations and the calculus of variations : essays in honor of Ennio De Giorgi. - Boston : Birkhauser, 1989. - p. 285-309},
	number = {SISSA;96/87/M},
	year = {1989},
	publisher = {SISSA Library},
	url = {http://hdl.handle.net/1963/577},
	author = {Gianni Dal Maso and G. Carere and Antonio Leaci and Eduardo Pascali}
}
