Khetsophon Phinyo และผู้แต่งคนอื่นๆ. (2021) Methodology of Local Geoid Improvement Using Least-Squares Collocation with Parameters and an Optimal Covariance Function. <i>International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies</i>, <i>12</i>(5), 12A5U: 1-10.Khetsophon Phinyo และผู้แต่งคนอื่นๆ. "Methodology of Local Geoid Improvement Using Least-Squares Collocation with Parameters and an Optimal Covariance Function". International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies 12 (2021):12A5U: 1-10.Khetsophon Phinyo และผู้แต่งคนอื่นๆ. Methodology of Local Geoid Improvement Using Least-Squares Collocation with Parameters and an Optimal Covariance Function. TuEngr Group:ม.ป.ท. 2021.