@article{10_37236_1051,
     author = {Harold Widom},
     title = {On the limiting distribution for the length of the longest alternating sequence in a random permutation},
     journal = {The electronic journal of combinatorics},
     year = {2006},
     volume = {13},
     doi = {10.37236/1051},
     zbl = {1086.05012},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1051/}
}