@article {1988,
	title = {H-surfaces with obstacles.  (Italian)},
	journal = {Ann. Univ. Ferrara Sez. VII (N.S.) 34 (1988), 1-14},
	number = {SISSA;9/87/M},
	year = {1988},
	publisher = {SISSA Library},
	url = {http://hdl.handle.net/1963/491},
	author = {Roberta Musina}
}
