TY - JOUR AU - George Svetlichny TI - Equivariance, Variational Principles, and the Feynman Integral JO - Symmetry, integrability and geometry: methods and applications PY - 2008 VL - 4 UR - http://geodesic.mathdoc.fr/item/SIGMA_2008_4_a31/ LA - en ID - SIGMA_2008_4_a31 ER -