Baskaran, P., Raja Rajeswari, B., and Jayabalan, N. “A simple approach to improve plant regeneration from callus culture of Sorghum bicolor for crop improvement”. International Journal of Agricultural Technology, vol. 1, no. 1, June 2005, pp. 179-92, https://li04.tci-thaijo.org/index.php/IJAT/article/view/5831.