@article{doi:10.1302/0301-620X.53B1.23,
author = {Hooper, Jonathan C. and Jones, E. Wyn},
title = {PRIMARY PROTRUSION OF THE ACETABULUM},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {53-B},
number = {1},
pages = {23-29},
year = {1971},
doi = {10.1302/0301-620X.53B1.23},
url = {https://doi.org/10.1302/0301-620X.53B1.23}
}