Subhadeep Mandal, et al. “Surface Soil Moisture Estimation During Dry Winter in the Terai Region of Eastern India: Use of Trapezoid Models Based on Landsat 8 and Sentinel 2 Data”. Journal of the Indian Society of Soil Science, vol. 71, no. 4, Mar. 2024, pp. 351-6, https://epubs.icar.org.in/index.php/JISSS/article/view/149139.