%0 Journal Article %A Bennett, Michael A. %T Differences between Perfect Powers %J Canadian mathematical bulletin %D 2008 %P 337-347 %V 51 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2008-034-8/ %R 10.4153/CMB-2008-034-8 %F 10_4153_CMB_2008_034_8