%0 Journal Article %A László Szabados %T Quasi-local energy-momentum and the Sen geometry of two-surfaces %J Banach Center Publications %D 1997 %P 205-219 %V 41 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/-41-1-205-219/ %R 10.4064/-41-1-205-219 %G en %F 10_4064__41_1_205_219