Lδ groups are almost convex and have a sub-cubic Dehn function.
Elder, Murray
Geometry & Topology, Tome 8 (2004), p. 23-29 / Harvested from The Electronic Library of Mathematics
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Publié le : 2004-01-01
DOI : https://doi.org/10.2140/agt.2004.4.23
EUDML-ID : urn:eudml:doc:124220 
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     journal = {Geometry \& Topology},
     volume = {8},
     year = {2004},
     pages = {23-29},
     doi = {10.2140/agt.2004.4.23},
     zbl = {1056.20030},
     language = {en},
     url = {http://dml.mathdoc.fr/item/02104374}
}

Elder, Murray. Lδ groups are almost convex and have a sub-cubic Dehn function.. Geometry & Topology, Tome 8 (2004) pp. 23-29. doi : 10.2140/agt.2004.4.23. http://gdmltest.u-ga.fr/item/02104374/