Lay, A. N., Hass, C. J., Webb Smith, D., & Gregor, R. J. (2005). Characterization of a system for studying human gait during slope walking. Journal of applied biomechanics, 21(2), S. 153-166. doi:10.1123/jab.21.2.153

Lay, Andrea N., Chris J. Hass, D. Webb Smith, and Robert J. Gregor. "Characterization of a System for Studying Human Gait During Slope Walking." Journal of Applied Biomechanics 21, no. 2 (2005): S. 153-166.

Lay, Andrea N., Chris J. Hass, D. Webb Smith, and Robert J. Gregor. "Characterization of a System for Studying Human Gait During Slope Walking." Journal of Applied Biomechanics 21.2 (2005): S. 153-166.