Kumari1, A. et al. 2016. Trace Determination of Tin(II) Using 6-Chloro-3-hydroxy-2-{(E)-1’-methyl-2’-phenylvinyl}-4-oxo-4H-1-benzopyran as Analytical Reagent. Asian Journal of Chemistry. 29, 1 (Oct. 2016), 76–80. DOI:https://doi.org/10.14233/ajchem.2017.20135.