Team, Support. “On the Diamond Operator Related to Nonlinear Beam Equation: Wanchak Satsanit”. Thai Journal of Mathematics 13, no. 2 (August 1, 2015): 319–336. Accessed December 27, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/511.