%0 Journal Article %A M. I. Klyuchantsev %T Integrals of fractional order, and singular boundary value problems %J Differencialʹnye uravneniâ %D 1976 %P 983-990 %V 12 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1976_12_6_a3/ %G ru %F DE_1976_12_6_a3