@article{10_37236_1379,
     author = {Richard Stong},
     title = {The average order of a permutation},
     journal = {The electronic journal of combinatorics},
     year = {1998},
     volume = {5},
     doi = {10.37236/1379},
     zbl = {0907.11031},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1379/}
}