%0 Journal Article %A A. M. Nakhushev %T The Sturm--Liouville problem for an ordinary second-order differential equation with fractional derivatives in the lowest terms %J Doklady Akademii Nauk %D 1977 %P 308-311 %V 234 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1977_234_2_a12/ %G ru %F DAN_1977_234_2_a12