Ira M. Gessel, Seunghyun Seo. A Refinement of Cayley's Formula for Trees. Electr. J. Comb., 11(2), 2006. [doi]
@article{GesselS06, title = {A Refinement of Cayley's Formula for Trees}, author = {Ira M. Gessel and Seunghyun Seo}, year = {2006}, url = {http://www.combinatorics.org/Volume_11/Abstracts/v11i2r27.html}, researchr = {https://researchr.org/publication/GesselS06}, cites = {0}, citedby = {0}, journal = {Electr. J. Comb.}, volume = {11}, number = {2}, }