TY  - JOUR
AU  - Shipley, J. A.
AU  - Beukes, C. A.
DO  - doi:10.1302/0301-620X.80B4.0800662
UR  - https://doi.org/10.1302/0301-620X.80B4.0800662
TI  - The nature of the spondylolytic defect
T2  - The Journal of Bone & Joint Surgery British Volume
VL  - 80-B
IS  - 4
PY  - 1998
SP  - 662
EP  - 664
ER  -