Doungpueng, Khunnithi, et al. “Selection of Proper Combine Harvesters to Field Conditions by an Effective Field Capacity Prediction Model”. International Journal of Agricultural and Biological Engineering, vol. 13, no. 4, Aug. 2020, pp. 125-34, https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/4984.