@book{29991,
	author = {Theil, Henri.},
	title = {Statistical decomposition analysis.},
	publisher = {North-Holland Pub. Co.},
	year = {1972.},
	series = {Studies in mathematical and managerial economics},
	address = {Amsterdam},
	note = {Sole distributors for the U.S.A. and Canada: American Elsevier Publishing Co., New York.}
}