@book{9864,
	author = {International Astronomical Union Colloquium on Radio Recombination Lines, 25 Years of Investigation and Gordon, M. A., ed.},
	title = {Radio recombination lines},
	publisher = {Kluwer Academic},
	year = {1990},
	series = {Astrophysics and space science library; v. 163},
	address = {Dordrecht}
}