%0 Journal Article %A Sen-Peng Eu %A Tung-Shan Fu %T Exterior pairs and up step statistics on Dyck paths %J The electronic journal of combinatorics %D 2011 %V 18 %N 1 %U http://geodesic.mathdoc.fr/articles/10.37236/579/ %R 10.37236/579 %F 10_37236_579