@article{doi:10.1302/0301-620X.69B5.3680336,
author = {Nunn, D},
title = {The Ring uncemented polyethylene cup in the abnormal acetabulum},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {69-B},
number = {5},
pages = {756-760},
year = {1987},
doi = {10.1302/0301-620X.69B5.3680336},
url = {https://doi.org/10.1302/0301-620X.69B5.3680336}
}