1. A new concept in Strapdown inertial navigation;Bortz;NASA TR R-329,1970
2. Accelerographic analysis of human gait;Gage;ASME Paper 64, WA/HUF-8,1964
3. The numerical presentation of the kinematics of human body motions;Gutewort,1971
4. Direction cosine computation error;Jordan;NASA TR R-304,1969
5. An electrogoniometric study of knee motion in normal gait;Kettelkamp;J. Bone Jnt Surg.,1970