@article{BSMF_2007__135_1_93_0,
     author = {Bourdon, Marc},
     title = {Constantes de {Sobolev} des arbres},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {93--103},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {135},
     number = {1},
     year = {2007},
     doi = {10.24033/bsmf.2527},
     mrnumber = {2430200},
     zbl = {1152.58013},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.24033/bsmf.2527/}
}