%0 Journal Article %A G. Raugel %T Finite Dimensional Approximation of Bifurcation Problems in Presence of Symmetries. %J Numerische Mathematik %D 1986 %P 137-198 %V 48 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1986__48_133064/ %F NUMA_1986__48_133064