1. Colorimetric Metal Analysis;Sandell,1959
2. Determination of traces of arsenic;Krutitskaya;Zavodsk. Lab,1964
3. Radiometric determination of microgram amounts of arsenic;Wilson;Analyst,1967
4. Macro and Semi-micro Chemical Analysis without H2S, using potassium thiocarbonate;Johri,1968
5. The PTC scheme of systematic separation of cation-groups including the less common metals;Johri;Indian J. Appl. Chem,1963