%0 Journal Article %A Ricky X. F. Chen %T A refinement of the formula for \(k\)-ary trees and the Gould-Vandermonde's convolution %J The electronic journal of combinatorics %D 2008 %V 15 %U http://geodesic.mathdoc.fr/articles/10.37236/776/ %R 10.37236/776 %F 10_37236_776