@article{10_37236_1470,
     author = {Aaron Robertson and Herbert S. Wilf and Doron Zeilberger},
     title = {Permutation patterns and continued fractions},
     journal = {The electronic journal of combinatorics},
     year = {1999},
     volume = {6},
     doi = {10.37236/1470},
     zbl = {0937.05004},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1470/}
}