Sharma, Jaswant, and S.K. Mukherjee. “Polarographic Study of Cu-Pyramidone in Aqueous-Nonaqueous Medium from Soil Ore Sample of Khetri Nagar ”. Asian Journal of Chemistry, vol. 13, no. 2, Mar. 2010, pp. 565-8, https://asianpubs.org/index.php/ajchem/article/view/22631.