@article{10_4171_ggd_63,
     author = {Daniel Groves and Henry Wilton},
     title = {Enumerating limit groups},
     journal = {Groups, geometry, and dynamics},
     pages = {389--399},
     year = {2009},
     volume = {3},
     number = {3},
     doi = {10.4171/ggd/63},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/63/}
}