@article{GT_2023_27_6_a5,
     author = {Liu, Beibei and Wang, Shi},
     title = {Discrete subgroups of small critical exponent},
     journal = {Geometry & topology},
     pages = {2347--2381},
     publisher = {mathdoc},
     volume = {27},
     number = {6},
     year = {2023},
     doi = {10.2140/gt.2023.27.2347},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2023.27.2347/}
}