@book{97249,
	author = {Errera, Steven. and Brown, Stewart L. and ebrary, Inc.},
	title = {Fundamentals of trading energy futures & options},
	publisher = {PennWell Corp.,},
	year = {c2002.},
	address = {Tulsa, OK :},
	edition = {2nd ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10605559}
}