%0 Journal Article %A Harvey, John %A Searle, Catherine %T Positively curved Riemannian orbifolds and Alexandrov spaces with circle symmetry in dimension \(4\) %J Documenta mathematica %D 2021 %P 1889-1927 %V 26 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2021__26__a4/ %G en %F DOCMA_2021__26__a4