%0 Journal Article %A Michal Doucha %T Metric topological groups: their metric approximation and metric ultraproducts %J Groups, geometry, and dynamics %D 2018 %P 615-636 %V 12 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4171/ggd/450/ %R 10.4171/ggd/450 %F 10_4171_ggd_450