“Comparative Effect of Burst Transcutaneous Electrical Nerve Stimulation (Tens) Versus Interferential Therapy (Ift) Along With Exercise In Reducing Pain and Functional Impairtment in Subjects With Knee Osteoarthritis”. Indian Journal of Physiotherapy and Occupational Therapy - An International Journal, vol. 14, no. 3, July 2020, pp. 115-20, https://doi.org/10.37506/ijpot.v14i3.9679.