@book{160983,
	author = {Johnson, Paul C. and American Petroleum Institute, API and Johnson, Paul C.},
	title = {Identification of critical parameters for the Johnson and Ettinger (1991) vapor intrusion model},
	series = {API Soil & groundwater research bulletin},
	note = {Este documento puede ser consultado en la página de API},
	url = {http://api-ep.api.org/filelibrary/bulletin17.pdf}
}