@article{10_37236_1872,
     author = {Marcelo Aguiar and Samuel K. Hsiao},
     title = {Canonical characters on quasi-symmetric functions and bivariate {Catalan} numbers},
     journal = {The electronic journal of combinatorics},
     year = {2004},
     volume = {11},
     number = {2},
     doi = {10.37236/1872},
     zbl = {1071.05072},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1872/}
}