%0 Journal Article %A T. N. Fomenko %T The Existence of Zeros of Multivalued Functionals, Coincidence Points, and Fixed Points in~$f$-Quasimetric Spaces %J Matematičeskie zametki %D 2021 %P 598-609 %V 110 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2021_110_4_a10/ %G ru %F MZM_2021_110_4_a10