%0 Journal Article %A Dirk Fesser %A Werner M. Seiler %T Existence and Construction of Vessiot Connections %J Symmetry, integrability and geometry: methods and applications %D 2009 %V 5 %U http://geodesic.mathdoc.fr/item/SIGMA_2009_5_a91/ %G en %F SIGMA_2009_5_a91