%0 Journal Article %A J.H.C. Whitehead %A E.H. Spanier %T On fibre spaces in which the fibre is contractible. %J Commentarii mathematici Helvetici %D 1955 %P 1-8 %V 29 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1955__29_139091/ %F CMH_1955__29_139091