%0 Journal Article %A A. V. Greshnov %T Symmetrizations of distance functions and $f$-quasimetric spaces %J Matematičeskie trudy %D 2018 %P 150-162 %V 21 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MT_2018_21_2_a6/ %G ru %F MT_2018_21_2_a6