%0 Journal Article %A J. Rappaz %T Approximation of the Spectrum of a Non-Compact Operator Given by the Magnetohydrodynamic Stability of a Plasma. %J Numerische Mathematik %D 1977 %P 15-24 %V 28 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1977__28_132472/ %F NUMA_1977__28_132472