@book{2013,
	author = {Homer, John,},
	title = {Natural gas in developing countries : },
	publisher = {World Bank,},
	year = {c1993.},
	series = {World Bank discussion papers,},
	address = {Washington, D.C. :},
	url = {http://elibrary.worldbank.org/doi/book/10.1596/0-8213-2329-6}
}