Shakoor, Md. A., Md. Shahidur Rahman, Abul Kalam Azad, and Md. Sadrul Islam. “Effects of Isometric Quadriceps Muscle Strengthening Exercise on Chronic Osteoarthritis of the Knee”. Bangladesh Medical Research Council Bulletin 36, no. 1 (July 17, 2010): 20–22. Accessed May 18, 2024. https://www.banglajol.info/index.php/BMRCB/article/view/5502.