%0 Journal Article %A V. N. Kolokoltsov %T Mixed Fractional Differential Equations and Generalized Operator-Valued Mittag-Leffler Functions %J Matematičeskie zametki %D 2019 %P 687-707 %V 106 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2019_106_5_a4/ %G ru %F MZM_2019_106_5_a4