@article{10_4171_ggd_154,
     author = {Nicholas W. M. Touikan},
     title = {The fully residually $F$ quotients of $F *\langle x,y \rangle$},
     journal = {Groups, geometry, and dynamics},
     pages = {155--220},
     year = {2012},
     volume = {6},
     number = {1},
     doi = {10.4171/ggd/154},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/154/}
}