K. C. VERMA, et al. “COMPARISON OF VARIOUS ACTIVE INGREDIENTS BETWEEN EX-SITU AND IN-VITRO GROWN PLANTS OF WITHANIA SOMNIFERA L. AND CICHORIUM INTYBUS L”. The Bioscan, vol. 7, no. 2, June 2012, pp. 347-52, https://thebioscan.com/index.php/pub/article/view/1038.