@book{3837,
	author = {International Astronomical Union Colloquium and Groth, H. G., ed. and International Astronomical Union},
	title = {Spectrum formation in stars with steady-state extended atmospheres},
	publisher = {Government Printing Office},
	year = {1970},
	series = {National Bureau of Standards Special publication, v. 332},
	address = {Washington, U S}
}