%0 Journal Article %A Heather Smith %A László Székely %A Hua Wang %A Shuai Yuan %T On different ``middle parts'' of a tree %J The electronic journal of combinatorics %D 2018 %V 25 %N 3 %U http://geodesic.mathdoc.fr/articles/10.37236/6408/ %R 10.37236/6408 %F 10_37236_6408