@article{JAC_2006__24_1_a1,
     author = {Ebrahimi-Fard, Kurusch and Guo, Li},
     title = {Mixable shuffles, quasi-shuffles and {Hopf} algebras.},
     journal = {Journal of Algebraic Combinatorics},
     pages = {83--101},
     publisher = {mathdoc},
     volume = {24},
     number = {1},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2006__24_1_a1/}
}