Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1979__15_2_a2, author = {Krupka, Demeter}, title = {Reducibility theorems for differentiable liftings in fiber bundles}, journal = {Archivum mathematicum}, pages = {93--106}, publisher = {mathdoc}, volume = {15}, number = {2}, year = {1979}, mrnumber = {563142}, zbl = {0439.55009}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1979__15_2_a2/} }
Krupka, Demeter. Reducibility theorems for differentiable liftings in fiber bundles. Archivum mathematicum, Tome 15 (1979) no. 2, pp. 93-106. http://geodesic.mathdoc.fr/item/ARM_1979__15_2_a2/