%0 Journal Article %A De Schepper, H. %T On Finite Element Methods for 2nd order (semi–) periodic Eigenvalue Problems %J Serdica Mathematical Journal %D 2000 %P 33-48 %V 26 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SMJ2_2000_26_1_a3/ %G en %F SMJ2_2000_26_1_a3