@article{GT_2008_12_3_a9,
     author = {Burillo, Jos\'e and Cleary, Sean and R\"over, Claas E},
     title = {Commensurations and subgroups of finite index of {Thompson{\textquoteright}s} group {F}},
     journal = {Geometry & topology},
     pages = {1701--1709},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {2008},
     doi = {10.2140/gt.2008.12.1701},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2008.12.1701/}
}