Jain, Neha, Yogesh Awasthi, and Rakesh Jain. “An IoT-Based Soil Analysis System Using Optical Sensors and Multivariate Regression”. International Journal of Experimental Research and Review 31, no. Spl Volume (July 30, 2023): 23-32. Accessed May 20, 2024. https://qtanalytics.in/journals/index.php/IJERR/article/view/2329.