ลำธาร ส, พิมสาร ม. Flexibility Factors of Unreinforced Branch Pipe Connections Subjected to In-Plane and Out-of-Plane Bending Moments for Fixed-Simply End Conditions. Eng. & Technol. Horiz. [Internet]. 2020 Jun. 17 [cited 2024 May 19];32(2):25-30. Available from: https://ph01.tci-thaijo.org/index.php/lej/article/view/241230