Rai, H., Kashyap, P., Ranjan Kumar, S., & Shalamuddin, . (2010). Spectrophotometric Determination of Copper(II)with Phenanthrenequinone Monosemicarbazone. Asian Journal of Chemistry, 16(1), 304–308. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/19602