%0 Journal Article %T The quadratic isoperimetric inequality for mapping tori of free group automorphisms %A Martin R. Bridson %A Daniel Groves %J Mathematics %D 2008 %I arXiv %X If F is a finitely generated free group and \phi is an automorphism of F then F \rtimes_\phi Z satisfties a quadratic isoperimetric inequality. %U http://arxiv.org/abs/0802.1323v1