TIWARI, B., I. P. TRIPATHI, S. SAXENA, H. BHUSHAN, A. P. DWIVEDI, and R. DUBEY. “SYNTHESIS AND CHARACTERIZATION OF CNTS BY NATURAL PRODUCT”. International Journal of Chemistry Research, vol. 2, no. 3, Jan. 2011, pp. 42-45, https://www.ijcr.info/index.php/journal/article/view/45.