Nutthapon Zonthichai และ Pasakorn Watanatada. (2010) Tibiofemoral joint reaction force during stance phase of backward and forward walking at varied speed. Chulalongkorn University:ม.ป.ท.Nutthapon Zonthichai และ Pasakorn Watanatada. 2010. Tibiofemoral joint reaction force during stance phase of backward and forward walking at varied speed. ม.ป.ท.:Chulalongkorn University;Nutthapon Zonthichai และ Pasakorn Watanatada. Tibiofemoral joint reaction force during stance phase of backward and forward walking at varied speed. ม.ป.ท.:Chulalongkorn University, 2010. Print.