@book{26956,
	author = {Giannessi, Franco and Maugeri, Antonino  and Maugeri, Antonino ; jt. ed.},
	title = {Variational analysis and applications},
	publisher = {Springer Science+Business Media, Inc.},
	year = {2005},
	series = {Nonconvex Optimization and its applications },
	address = {New York}
}