@article{10_4153_CJM_1993_021_5,
     author = {Schmitt, William R.},
     title = {Hopf {Algebras} of {Combinatorial} {Structures}},
     journal = {Canadian journal of mathematics},
     pages = {412--428},
     year = {1993},
     volume = {45},
     number = {2},
     doi = {10.4153/CJM-1993-021-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1993-021-5/}
}