@book{156745,
	author = {American Petroleum Institute, API},
	title = {Thiophene, 2, 3 - and 2,5 - Dihydrothiophene, and Tetrahydrothiophene},
	publisher = {American Petroleum Institute, API},
	year = {1981},
	series = {API Monograph Series},
	address = {Washington}
}