@article{10_4171_ggd_102,
     author = {Jack Oliver Button},
     title = {Largeness of {LERF} and 1-relator groups},
     journal = {Groups, geometry, and dynamics},
     pages = {709--738},
     year = {2010},
     volume = {4},
     number = {4},
     doi = {10.4171/ggd/102},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/102/}
}