@article{10_2140_agt_2008_8_2031,
     author = {Wilton, Henry},
     title = {Residually free 3{\textendash}manifolds},
     journal = {Algebraic and Geometric Topology},
     pages = {2031--2047},
     year = {2008},
     volume = {8},
     number = {4},
     doi = {10.2140/agt.2008.8.2031},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2008.8.2031/}
}