Addison, C. C., Main group elements: groups V and VI, edited by C. C. Addison and D. B. Sowerby. - London, Baltimore, Butterworths; University Park Press [1972] - 327 p. 24 cm. - Inorganic chemistry, series one, v. 2 MTP international review of science . ISBN: 0839110057 Dewey Class. No.: 546/.5