@article{DMTCS_2015_special_285_a65,
     author = {Barnard, Emily and Meehan, Emily and Polster, Shira and Reading, Nathan},
     title = {Universal geometric coefficients for the four-punctured sphere {(Extended} {Abstract)}},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {DMTCS Proceedings, 27th International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2015)},
     year = {2015},
     doi = {10.46298/dmtcs.2521},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.2521/}
}