@article{DMTCS_2013_special_264_a95,
     author = {Chatel, Gr\'egory and Pons, Viviane},
     title = {Counting smaller trees in the {Tamari} order},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {DMTCS Proceedings vol. AS, 25th International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2013)},
     year = {2013},
     doi = {10.46298/dmtcs.12824},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.12824/}
}