@article{ITA_2000__34_4_279_0,
     author = {Nebel, Markus E.},
     title = {On the {Horton-Strahler} number for combinatorial tries},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {279--296},
     publisher = {EDP-Sciences},
     volume = {34},
     number = {4},
     year = {2000},
     mrnumber = {1809861},
     zbl = {0966.05019},
     language = {en},
     url = {http://www.numdam.org/item/ITA_2000__34_4_279_0/}
}