%0 Journal Article %A P. Mormul %T Discrete Models of Codimension-Two Singularities of Goursat Flags %J Informatics and Automation %D 2002 %P 491-502 %V 236 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2002_236_a48/ %G en %F TRSPY_2002_236_a48