S. P. Datta, B. L. Meena, and R. K. Rattan, “Development of a Computer Program for Calculating Metal Ion Activity Using Baker Soil Test”, JISSS, vol. 61, no. 1, Jul. 2013, Accessed: Jul. 17, 2026. [Online]. Available: https://epubs.icar.org.in/index.php/JISSS/article/view/31747