by Bibby, Susan R S, Fairbank, Jeremy C T, Urban, Martin R, Urban, Jill P G
Published in Spine (Philadelphia, Pa. 1976) (15.10.2002)

by Urban, M R, Fairbank, J C, Etherington, P J, Loh FRCA, L, Winlove, C P, Urban, J P
Published in Spine (Philadelphia, Pa. 1976) (15.04.2001)

by Urban, M R, Fairbank, J C, Bibby, S R, Urban, J P
Published in Spine (Philadelphia, Pa. 1976) (15.03.2001)