@article{10_4171_ggd_162,
     author = {Tatiana Bandman and Shelly Garion and Fritz Grunewald},
     title = {On the surjectivity of {Engel} words on {PSL(2,}$q$)},
     journal = {Groups, geometry, and dynamics},
     pages = {409--439},
     year = {2012},
     volume = {6},
     number = {3},
     doi = {10.4171/ggd/162},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/162/}
}