@book{57564,
	author = {American Petroleum Institute, API},
	title = {Manual on installation of refinery instruments and control systems. Part II- Process stream analyzers. Section 6 -Analyzers for the measurement of sulfur and its compounds :},
	publisher = {American Petroleum Institute, API,},
	year = {1983.},
	address = {Washington :},
	edition = {4th. ed.}
}