Knudson, D., & Bahamonde, R. (1999). Trunk and racket kinematics at impact in the open and square stance tennis forehand. Biology of sport, 16(1), S. 3-10.

Knudson, D., and R. Bahamonde. "Trunk and Racket Kinematics At Impact in the Open and Square Stance Tennis Forehand." Biology of Sport 16, no. 1 (1999): S. 3-10.

Knudson, D., and R. Bahamonde. "Trunk and Racket Kinematics At Impact in the Open and Square Stance Tennis Forehand." Biology of Sport 16.1 (1999): S. 3-10.