@article{10_4171_dm_860,
     author = {Catherine Searle and John Harvey},
     title = {Positively curved {Riemannian} orbifolds and {Alexandrov} spaces with circle symmetry in dimension $4$},
     journal = {Documenta mathematica},
     pages = {1889--1927},
     year = {2021},
     volume = {26},
     doi = {10.4171/dm/860},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/860/}
}