@article{10_37236_6780,
     author = {Moa Apagodu and David Applegate and N. J. A. Sloane and Doron Zeilberger},
     title = {Analysis of the gift exchange problem},
     journal = {The electronic journal of combinatorics},
     year = {2017},
     volume = {24},
     number = {3},
     doi = {10.37236/6780},
     zbl = {1430.05003},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/6780/}
}