DeFrate, L. E., Doehring, T. C., Nishida, K., Kang, J. D., Gilbertson, L. G., & Woo, S. L. Y. (1997). Virtual reality assisted measurement of in-vivo cervical spine kinematics. American Society of Mechanical Engineers Bioengineering Division Publication BED, 36, 9–10.

DeFrate, L. E., T. C. Doehring, K. Nishida, J. D. Kang, L. G. Gilbertson, and S. L. Y. Woo. “Virtual reality assisted measurement of in-vivo cervical spine kinematics.” American Society of Mechanical Engineers Bioengineering Division Publication BED 36 (December 1, 1997): 9–10.

DeFrate LE, Doehring TC, Nishida K, Kang JD, Gilbertson LG, Woo SLY. Virtual reality assisted measurement of in-vivo cervical spine kinematics. American Society of Mechanical Engineers Bioengineering Division Publication BED. 1997 Dec 1;36:9–10.

DeFrate, L. E., et al. “Virtual reality assisted measurement of in-vivo cervical spine kinematics.” American Society of Mechanical Engineers Bioengineering Division Publication BED, vol. 36, Dec. 1997, pp. 9–10.

DeFrate LE, Doehring TC, Nishida K, Kang JD, Gilbertson LG, Woo SLY. Virtual reality assisted measurement of in-vivo cervical spine kinematics. American Society of Mechanical Engineers Bioengineering Division Publication BED. 1997 Dec 1;36:9–10.