%0 Journal Article %A Pascal Ochem %A Matthieu Rosenfeld %T Avoidability of formulas with two variables %J The electronic journal of combinatorics %D 2017 %V 24 %N 4 %U http://geodesic.mathdoc.fr/articles/10.37236/6536/ %R 10.37236/6536 %F 10_37236_6536