%0 Journal Article %A G. È. Abduragimov %T On the existence and uniqueness of a positive solution to a boundary-value problem for a nonlinear fractional-order functional differential equation %J Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory %D 2021 %P 3-7 %V 194 %I mathdoc %U http://geodesic.mathdoc.fr/item/INTO_2021_194_a0/ %G ru %F INTO_2021_194_a0