%0 Journal Article %A Prodinger, Helmut %T Descendants in heap ordered trees or a triumph of computer algebra. %J The Electronic Journal of Combinatorics [electronic only] %D 1996 %P Research paper R29, 9 p. %V 3 %N 1 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/EJC_1996__3_1_119229/ %G en %F EJC_1996__3_1_119229