1. Spectrometric Determination of Osmium with Thiourea;Ayres;Anal. Chem,1950
2. Recent Advances in the Analytical Chemistry of the Noble Metals;Beamish,1972
3. Spektrofotometričeskoje isledovanije vzaimodeistvija osmija(VIII) s 4-(2-piridilazo)rezorcinom;Busev;Vestn. Mosk. Univ. Khim,1968
4. Osmium;Livingston,1978
5. Organic Elemental Analysis, Reviews;Ma;Anal. Chem,1980