A subgroup of a direct product of free groups whose Dehn function has a cubic lower bound

Will Dison
2009 Journal of group theroy  
We establish a cubic lower bound on the Dehn function of a certain finitely presented subgroup of a direct product of three free groups.
doi:10.1515/jgt.2009.012 fatcat:s4expj2vj5az3p5vzoezzwdo6y