%0 Journal Article %A Janet S. Beissinger %A Uri N. Peled %T A note on major sequences and external activity in trees %J The electronic journal of combinatorics %D 1997 %V 4 %N 2 %U http://geodesic.mathdoc.fr/articles/10.37236/1319/ %R 10.37236/1319 %F 10_37236_1319