Kumar, Ashok, and A.L.J. Rao. 2010. “ Spectrophotometric Determination of Sodium N-Methyl- Piperazinecarbodithioate by Extraction of Its Chromium Complexes into Chloroform ”. Asian Journal of Chemistry 5 (3):491-95. https://asianpubs.org/index.php/ajchem/article/view/24859.