@article{10_4171_ggd_682,
     author = {Sam Shepherd},
     title = {Two generalisations of {Leighton{\textquoteright}s} theorem (with an appendix by {Giles} {Gardam} and {Daniel} {J.} {Woodhouse)}},
     journal = {Groups, geometry, and dynamics},
     pages = {743--778},
     year = {2022},
     volume = {16},
     number = {3},
     doi = {10.4171/ggd/682},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/682/}
}