@article{doi:10.1302/0301-620X.62B1.7351439,
author = {Eisenstein, S},
title = {The trefoil configuration of the lumbar vertebral canal. A study of South African skeletal material},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {62-B},
number = {1},
pages = {73-77},
year = {1980},
doi = {10.1302/0301-620X.62B1.7351439},
url = {https://doi.org/10.1302/0301-620X.62B1.7351439}
}