@article{TAC_2000_7_a12,
     author = {John F. Kennison},
     title = {Solution manifolds for systems of differential equations},
     journal = {Theory and applications of categories},
     pages = {239--262},
     publisher = {mathdoc},
     volume = {7},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2000_7_a12/}
}