Baltzopoulos, V. (1995). A videofluoroscopy method for optical distortion correction and measurement of knee-joint kinematics. Clinical biomechanics, 10(2), S. 85-92. doi:10.1016/0268-0033(95)92044-M

Baltzopoulos, V. "A Videofluoroscopy Method for Optical Distortion Correction and Measurement of Knee-joint Kinematics." Clinical Biomechanics 10, no. 2 (1995): S. 85-92.

Baltzopoulos, V. "A Videofluoroscopy Method for Optical Distortion Correction and Measurement of Knee-joint Kinematics." Clinical Biomechanics 10.2 (1995): S. 85-92.