%0 Journal Article %A M. Chaperon %T Singularities in Dynamics: A~Catastrophic Viewpoint %J Informatics and Automation %D 2009 %P 14-45 %V 267 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2009_267_a1/ %G en %F TRSPY_2009_267_a1