%0 Journal Article %A Slawomir Kwasik %T Wall's obstructions and Whitehead torsion. %J Commentarii mathematici Helvetici %D 1983 %P 503-508 %V 58 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1983__58_139951/ %F CMH_1983__58_139951