@article{ARM_1981_17_1_a4,
     author = {Kol\'a\v{r}, Ivan},
     title = {Connections in 2-fibered manifolds},
     journal = {Archivum mathematicum},
     pages = {23--30},
     year = {1981},
     volume = {17},
     number = {1},
     mrnumber = {672485},
     zbl = {0479.53022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1981_17_1_a4/}
}