A. Kumari1, U. Berar2, R. Agnihotri2, and N. Agnihotri1, “Trace Determination of Tin(II) Using 6-Chloro-3-hydroxy-2-{(E)-1’-methyl-2’-phenylvinyl}-4-oxo-4H-1-benzopyran as Analytical Reagent”, ajc, vol. 29, no. 1, pp. 76–80, Oct. 2016.