Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{IM_1968__6_141933, author = {V.J. LAL}, title = {Wall {Obstruction} of a {Fibration.}}, journal = {Inventiones mathematicae}, pages = {67--77}, publisher = {mathdoc}, volume = {6}, year = {1968}, zbl = {0159.53602}, url = {http://geodesic.mathdoc.fr/item/IM_1968__6_141933/} }
V.J. LAL. Wall Obstruction of a Fibration.. Inventiones mathematicae, Tome 6 (1968), pp. 67-77. http://geodesic.mathdoc.fr/item/IM_1968__6_141933/