@article{JEP_2016__3__365_0, author = {H\'enard, Olivier and Maillard, Pascal}, title = {On trees invariant under edge contraction}, journal = {Journal de l{\textquoteright}\'Ecole polytechnique - Math\'ematiques}, pages = {365--400}, publisher = {ole polytechnique}, volume = {3}, year = {2016}, doi = {10.5802/jep.36}, mrnumber = {3580038}, zbl = {1364.60105}, language = {en}, url = {http://archive.numdam.org/articles/10.5802/jep.36/} }