%0 Journal Article %A R. Jackiw %A A. P. Polychronakos %T Dynamical Poincar\'e Symmetry Realized by Field-Dependent Diffeomorphisms %J Informatics and Automation %D 1999 %P 193-211 %V 226 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1999_226_a15/ %G en %F TRSPY_1999_226_a15