Selvakumar, Vijaya, and Selvakumar Duraipandi. “Solid Phase Extraction of Ayurvedic Lipid Based Formulations for the Analysis and the Determination of Active Botanical Ingredients by HPTLC”. Journal of Pharmaceutical Chemistry, vol. 1, no. 4, Feb. 2015, pp. 74-79, https://doi.org/10.14805/jphchem.2014.art34.