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@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/} }
Neusser, Katharina. Universal prolongation of linear partial differential equations on filtered manifolds. Archivum mathematicum, Tome 45 (2009) no. 4, pp. 289-300. http://geodesic.mathdoc.fr/item/ARM_2009__45_4_a5/