Balasubramanian, V., et al. “Mapping and Classification of Upland Soils Formed from Peninsular Gneiss in Rasipuram Block, Namakkal District of Tamil Nadu”. International Journal of Bio-Resource and Stress Management, vol. 11, no. Jun, 3, May 2020, pp. 232-9, https://www.ojs.pphouse.org/index.php/IJBSM/article/view/4009.