. "THE EQUICONVERGENCE OF THE EIGENFUNCTION EXPANSION FOR A SINGULAR STURM-LIOUVILLE PROBLEM WITH SIGN-VALUED WEIGHT ZAKI F.A. EL-RAHEEM, AND SHIMAA A.M. HAGAG", Electronic Journal of Mathematical Analysis and Applications, 6, 1, 2018, -. doi: 10.21608/ejmaa.2018.312529