Ramakrishnan, S., K. Nandhini, A. Porkalai, S. Allirani, A. Subathra, R. Ilakkia, P. Jayalakshmi, and P. Kalaivani. 2014. “AUXINS AND PHYSICO-CHEMICAL FACTORS INFLUENCED CALLUS FORMATION IN ACHYRANTHES ASPERA L. LEAF EXPLANT”. Journal of Microbiology, Biotechnology and Food Sciences 3 (6):444-47. https://office2.jmbfs.org/index.php/JMBFS/article/view/7654.