Rosadi, R., A. Jankaew, S. S. Ika Wardojo, and R. Septianingsih. “The Effectiveness of Infrared and Retrowalking Exercise on Pain Reduction in Patients With Knee Osteoarthritis”. KnE Medicine, Vol. 2, no. 3, Sept. 2022, pp. 534–538, doi:10.18502/kme.v2i3.11906.