Parvin, F., J. I. Md, N. Jahan, H. Khan, P. E. Shaekh Md, A. Islam Md, M. H. Rahaman, and M. Rahman Md. “Efficient in Vitro Micropropagation of Gynura Procumbens - an Important Rare Medicinal Plant, through Shoot Tip and Nodal Segment Explants”. Journal of Research in Biology, Vol. 4, no. 6, Sept. 2014, pp. 1444-50, https://ojs.jresearchbiology.com/index.php/jrb/article/view/362.