Ira M. Gessel. Tournaments and Vandermond's determinant. Journal of Graph Theory, 3(3):305-307, 1979. [doi]
@article{Gessel79, title = {Tournaments and Vandermond's determinant}, author = {Ira M. Gessel}, year = {1979}, doi = {10.1002/jgt.3190030315}, url = {http://dx.doi.org/10.1002/jgt.3190030315}, researchr = {https://researchr.org/publication/Gessel79}, cites = {0}, citedby = {0}, journal = {Journal of Graph Theory}, volume = {3}, number = {3}, pages = {305-307}, }