Ayanniyi, O., O. B. Ogunkunle, and C. E. Mbada. “Comparative Efficacy of Low Level Laser Therapy And Pulsed Ultrasound in the Management of Second - Degree Contusion”. Nigerian Journal of Medical Rehabilitation, Vol. 11, no. 2, July 2007, doi:10.34058/njmr.v11i2.15.