%0 Journal Article %A Volkmer, Hans %T Eigenvalue problems of Atkinson, Feller and Krein, and their mutual relationship %J Electronic Journal of Differential Equations %D 2005 %V 2005 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a193/ %G en %F EJDE_2005__2005__a193