Precision land leveling for sustainable rice production: case studies in Cambodia, Thailand, Philippines, Vietnam, and India. - Nguyen-Van-Hung; Balingbing, Carlito; Sandro, Joseph; Khandai, Suryakanta; Chea, Hong; Songmethakrit, Thanach; Meas, Pyseth; Hitzler, Gerald; Zwick, Walter; Viriyangkura, Ladda; Bautista, Elmer; Gummert, Martin (Precision Agriculture, 2022)