%0 Journal Article %A Emmanuella Sandratra Rambeloson %A John Shareshian %T A counterexample to a conjecture on Schur positivity of chromatic symmetric functions of trees %J The electronic journal of combinatorics %D 2020 %V 27 %N 4 %U http://geodesic.mathdoc.fr/articles/10.37236/9696/ %R 10.37236/9696 %F 10_37236_9696