@article{10_37236_675,
     author = {Stephan Wagner},
     title = {Labeled trees, functions, and an algebraic identity},
     journal = {The electronic journal of combinatorics},
     year = {2011},
     volume = {18},
     number = {1},
     doi = {10.37236/675},
     zbl = {1337.05056},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/675/}
}