@article{doi:10.1302/0301-620X.63B3.7263741,
author = {Effendi, B and Roy, D and Cornish, B and Dussault, RG and Laurin, CA},
title = {Fractures of the ring of the axis. A classification based on the analysis of 131 cases},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {63-B},
number = {3},
pages = {319-327},
year = {1981},
doi = {10.1302/0301-620X.63B3.7263741},
url = {https://doi.org/10.1302/0301-620X.63B3.7263741}
}