@article{ARM_2008__44_1_a2,
     author = {Mikulski, W{\l}odzimierz M.},
     title = {The jet prolongations of $2$-fibred manifolds and~the~flow~operator},
     journal = {Archivum mathematicum},
     pages = {17--21},
     publisher = {mathdoc},
     volume = {44},
     number = {1},
     year = {2008},
     mrnumber = {2431227},
     zbl = {1212.58003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2008__44_1_a2/}
}