@article{doi:10.1302/0301-620X.42B4.730,
author = {Somerville, E. W.},
title = {FLEXION CONTRACTURES OF THE KNEE},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {42-B},
number = {4},
pages = {730-735},
year = {1960},
doi = {10.1302/0301-620X.42B4.730},
url = {https://doi.org/10.1302/0301-620X.42B4.730}
}