@book{90111,
	author = {Houston, Robert Stroud},
	title = {New stratigraphic subdivisions and redefinition of subdivisions of late Archean and early Proterozoic metasedimentary and metavolcanic rocks of the Sierra Madre and Medicine Bow Mountains, southern Wyoming},
	publisher = {U.S. G.P.O.},
	year = {1992.},
	series = {U.S. Geological Survey professional paper},
	address = {Washington}
}