%0 Journal Article %A M. Ya. Zhitomirskii %T Singularities and normal forms of even-dimensional Pfaffian equations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1988 %P 266-267 %V 43 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1988_43_5_a34/ %G en %F RM_1988_43_5_a34