NARESH KUMAR, K., A. KARUNAKAR, G. GUNESH, and K. MUKKANTI. 2010. “Quantitation of Protopine in Fumaria Parviflora L. Whole Plant Powder by High-Performance Liquid Chromatography”. Asian Journal of Chemistry 21 (9):6695-6700. https://asianpubs.org/index.php/ajchem/article/view/12136.