@article{ARM_2009__45_4_a5,
     author = {Neusser, Katharina},
     title = {Universal prolongation of linear partial differential equations on filtered manifolds},
     journal = {Archivum mathematicum},
     pages = {289--300},
     publisher = {mathdoc},
     volume = {45},
     number = {4},
     year = {2009},
     mrnumber = {2591683},
     zbl = {1212.35332},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2009__45_4_a5/}
}