@article {1989,
	title = {An approach to the thin obstacle problem for variational functionals depending on vector},
	journal = {Comm. Partial Differential Equations, 14 (1989), no.12, 1717-1743.},
	number = {SISSA;41/89/M},
	year = {1989},
	publisher = {SISSA Library},
	url = {http://hdl.handle.net/1963/802},
	author = {Gianni Dal Maso and Roberta Musina}
}
