Babu, K., V. B. Rajkishore, J. Narayanan, and T. Margesan. “Analysis of Heavy Metals and Inorganic Element Content in Stereospermum Colais Leaves”. International Current Pharmaceutical Journal, vol. 2, no. 3, Feb. 2013, pp. 63-66, doi:10.3329/icpj.v2i3.13583.