@article{10_4171_ggd_92,
     author = {Christopher H. Cashen},
     title = {Quasi-isometries between tubular groups},
     journal = {Groups, geometry, and dynamics},
     pages = {473--516},
     year = {2010},
     volume = {4},
     number = {3},
     doi = {10.4171/ggd/92},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/92/}
}