@article{10_2140_agt_2004_4_23,
     author = {Elder, Murray},
     title = {L\ensuremath{\delta} groups are almost convex and have a sub-cubic {Dehn} function},
     journal = {Algebraic and Geometric Topology},
     pages = {23--29},
     year = {2004},
     volume = {4},
     number = {1},
     doi = {10.2140/agt.2004.4.23},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2004.4.23/}
}