@article{10_37236_1027,
     author = {Michael Hardy},
     title = {Combinatorics of partial derivatives},
     journal = {The electronic journal of combinatorics},
     year = {2006},
     volume = {13},
     doi = {10.37236/1027},
     zbl = {1080.05006},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1027/}
}