%0 Journal Article %A B. M. Levitan %T Calculation of the regularized trace for the Sturm–Liouville operator %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1964 %V 19 %N 1 %U http://geodesic.mathdoc.fr/item/RM_1964_19_1_a8/ %G ru %F RM_1964_19_1_a8