@book{10251,
	author = {Koller, Alois.},
	title = {Work, power, and efficiency /},
	publisher = {Heyden,},
	year = {1989.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/B0007ASOKQ/chopaconline-20}
}