%0 Journal Article %A Kazuo Ishihara %T A Finite Element Lumped Mass Scheme for Solving Eigenvalue Problems of Circular Arches. %J Numerische Mathematik %D 1985 %P 499-504 %V 46 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1985__46_133010/ %F NUMA_1985__46_133010