@BOOK{Watts1993,
	AUTHOR = {Watts, Tom Jake},
	YEAR = {1993},
	TITLE = {"El Derecho de Autor" - Mexican Copyright Law and the North American Free Trade 	Agreement},
	EDITION = {},
	ISBN = {},
	PUBLISHER = {University of Alabama},
	ADDRESS = {},
}
@BOOK{Sapiro2003,
	AUTHOR = {Sapiro, Virginia AND Scharff, Robert AND Duffy, James E.},
	YEAR = {2003},
	TITLE = {Auto Body Repair Technology},
	EDITION = {0004. Aufl.},
	ISBN = {076-6-862-720-},
	PUBLISHER = {Cengage Learning},
	ADDRESS = {Clifton Park, NY},
}