@article{DMTCS_1997_1_a15,
     author = {Panholzer, Alois and Prodinger, Helmut},
     title = {Descendants and ascendants in binary trees},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {1},
     year = {1997},
     doi = {10.46298/dmtcs.246},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.246/}
}