@article{10_37236_4066,
     author = {Katharina Jochemko},
     title = {Order polynomials and {P\'olya's} enumeration theorem.},
     journal = {The electronic journal of combinatorics},
     year = {2014},
     volume = {21},
     number = {2},
     doi = {10.37236/4066},
     zbl = {1309.06003},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/4066/}
}