TY  - JOUR
AU  - Eisenstein, S
DO  - doi:10.1302/0301-620X.62B1.7351439
UR  - https://doi.org/10.1302/0301-620X.62B1.7351439
TI  - The trefoil configuration of the lumbar vertebral canal. A study of South African skeletal material
T2  - The Journal of Bone & Joint Surgery British Volume
VL  - 62-B
IS  - 1
PY  - 1980
SP  - 73
EP  - 77
ER  -