@mastersthesis {49608,
	title = {Production optimization of pump jacks},
	volume = {Petroleum Engineering},
	year = {2009},
	note = {Penn West Energy. Includes abstract and appendices},
	pages = {99},
	address = {Dalhousie University},
	url = {http://search.proquest.com/docview/305058960},
	author = {Khan, Hassan Ali},
	editor = {Dalhousie University. Petroleum Engineering Program}
}
