TY  - JOUR
AU  - Crellin, R. Q.
AU  - Jones, E. R.
DO  - doi:10.1302/0301-620X.55B1.20
UR  - https://doi.org/10.1302/0301-620X.55B1.20
TI  - SACRAL EXTRADURAL CYSTS 
T2  - The Journal of Bone & Joint Surgery British Volume
VL  - 55-B
IS  - 1
PY  - 1973
SP  - 20
EP  - 31
ER  -