@article {1995,
	title = {An existence result in a problem of the vectorial case of the calculus of variations},
	year = {1995},
	publisher = {SIAM},
	abstract = {SIAM J. Control Optim. 33 (1995) 960-970},
	url = {http://hdl.handle.net/1963/3513},
	author = {Arrigo Cellina and Sandro Zagatti}
}
