อุปดิสสกุล ส. Computation of Coefficients for Orthogonal Polynomial. Agr. Nat. Resour. [internet]. 1981 Jan. 1 [cited 2026 Sep. 17];15(1):55-63. available from: https://li01.tci-thaijo.org/index.php/anres/article/view/240850