%0 Journal Article %A M. G. Gasymov %T Analytic properties of the spectral function of the self-adjoint Sturm--Liouville operator %J Doklady Akademii Nauk %D 1963 %P 971-974 %V 150 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_150_5_a3/ %G ru %F DAN_1963_150_5_a3