@article{doi:10.1302/0301-620X.54B3.442, author = {Pennal, George F. and Conn, Garson S. and McDonald, Glen and Dale, Gordon and Garside, Henry}, title = {MOTION STUDIES OF THE LUMBAR SPINE }, journal = {The Journal of Bone & Joint Surgery British Volume}, volume = {54-B}, number = {3}, pages = {442-452}, year = {1972}, doi = {10.1302/0301-620X.54B3.442}, url = {https://doi.org/10.1302/0301-620X.54B3.442} }