%0 Journal Article %A Stephen M. Paneitz %T A Quartic Conformally Covariant Differential Operator for Arbitrary Pseudo-Riemannian Manifolds (Summary) %J Symmetry, integrability and geometry: methods and applications %D 2008 %V 4 %U http://geodesic.mathdoc.fr/item/SIGMA_2008_4_a35/ %G en %F SIGMA_2008_4_a35