@article{SIGMA_2009_5_a91,
     author = {Dirk Fesser and Werner M. Seiler},
     title = {Existence and {Construction} of {Vessiot} {Connections}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2009},
     volume = {5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2009_5_a91/}
}