Bashar, T., M. Misbahuddin, and M. A. Hossain. “A Double-Blind, Randomize, Placebo-Control Trial to Evaluate the Effect of Nigella Sativa on Palmar Arsenical Keratosis Patients”. Bangladesh Journal of Pharmacology, vol. 9, no. 1, Jan. 2014, pp. 15-21, doi:10.3329/bjp.v9i1.17167.