%0 Journal Article %A JS Blackburne %A EP Velikas %T Spondylolisthesis in children and adolescents %D 1977 %J The Journal of Bone & Joint Surgery British Volume %P 490-494 %V 59-B %N 4 %R 10.1302/0301-620X.59B4.925059 %U https://doi.org/10.1302/0301-620X.59B4.925059 %K