%0 Journal Article %A Lara Pudwell %A Eric Rowland %T Avoiding fractional powers over the natural numbers %J The electronic journal of combinatorics %D 2018 %V 25 %N 2 %U http://geodesic.mathdoc.fr/articles/10.37236/6678/ %R 10.37236/6678 %F 10_37236_6678