Vannasri, Kulkamol, Suwanna Maenpuen, and Prakairat Tunit. “Effect of Emulgel containing Langkasuka Oil versus Diclofenac Gel for Improving Physical Function in Patients with Knee Osteoarthritis: A randomized controlled trial”. Interdisciplinary Research Review 21, no. 2 (April 30, 2026). accessed August 27, 2026. https://ph02.tci-thaijo.org/index.php/jtir/article/view/265218.