%0 Journal Article %A A. B. Andreev %A R. D. Lazarov %T Lumped Mass Finite Element Method for Parabolic and Eigenvalue Problems %J Mathematica balkanica %D 1988 %P 85 %V 2 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_1988_2_1_a9/ %F MABA_1988_2_1_a9