@article{10_37236_1890,
     author = {Seunghyun Seo},
     title = {A combinatorial proof of {{P}ostnikov's} identity and a generalized enumeration of labeled trees},
     journal = {The electronic journal of combinatorics},
     year = {2004},
     volume = {11},
     number = {2},
     doi = {10.37236/1890},
     zbl = {1082.05008},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1890/}
}