De, Biplab, Avijit Chakraborty, Tandrima Majumder, Shilpi Chanda, and Binoy Behari Goswami. 2010. “Evaluation of Spermicidal and Antimicrobial Activities of Methanolic Extract of Leucas Aspera and Structural Elucidation of Separated Active Component”. Asian Journal of Chemistry 23 (2):826-28. https://asianpubs.org/index.php/ajchem/article/view/15871.