@article{MZ_1967__101_170845,
     author = {Francois Sigrist},
     title = {Obstruction et transgression cohomologique dans les espaces fibr\'es.},
     journal = {Mathematische Zeitschrift},
     pages = {306--321},
     publisher = {mathdoc},
     volume = {101},
     year = {1967},
     zbl = {0153.25203},
     url = {http://geodesic.mathdoc.fr/item/MZ_1967__101_170845/}
}