1. Spectrophotometric estimation of copper (I) using rubeanic acid;Paul;Anal. Chem,1963
2. Chromatographic separation of cations of the same elements in different valence states;Bighi;Ann. Chim. (Rome),1955
3. The separation and estimation of hexa- and pentavalent molybdenum by paper chromatography;Candela;Anal. Chim. Acta,1956
4. Cowan, M. R. and Foreman, J. K., The separation of the tri-, tetra-, and hexavalent states of plutonium by paper chromatography. Chem. Ind. (London), 1954, 1583–1585.
5. Anion exchange separation of iron(II) and iron(III) in tartrate medium;Gerald;Anal. Chem,1964