Jassim, Emad H., and Sami K. M. Ameen. “Influence of L-Tryptophan and Salicylic Acid on Secondary Metabolites Production from Leaves Induced Callus of Catharanthus Roseus L.G.Don in Vitro”. Journal of Biotechnology Research Center 8, no. 2 (June 1, 2014): 35–43. Accessed May 7, 2024. https://jobrc.org/index.php/jobrc/article/view/326.