%0 Journal Article %A Nebojša L. Lažetić %T Necessary and Sufficient Conditions for a System of Eigenfunctions and Associated Functions of a Sturm-liouville Operator with Discontinuous Coefficients to Possess the Basis Property %J Publications de l'Institut Mathématique %D 1985 %P 119 %V _N_S_38 %N 52 %I mathdoc %U http://geodesic.mathdoc.fr/item/PIM_1985_N_S_38_52_a16/ %G en %F PIM_1985_N_S_38_52_a16