Piyaphipat, S., Phungpaingam, B., Pinpatthanapong, K. and Musiket, K. (2022) “Convergence Rate of N-sided Polygonal Node-based Strain Smoothed Finite Element for 2D Castellated Beam Analysis”, Engineering and Technology Horizons , 39(3), pp. 29–40. available at: https://ph01.tci-thaijo.org/index.php/lej/article/view/246598 (accessed: 9 December 2025).