%0 Journal Article %A I. P. Leskovsky %T On the theory of fractional differentiation %J Differencialʹnye uravneniâ %D 1977 %P 170-173 %V 13 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1977_13_1_a24/ %G ru %F DE_1977_13_1_a24