@article{10_37236_1649,
     author = {Heinrich Niederhausen},
     title = {Catalan traffic at the beach},
     journal = {The electronic journal of combinatorics},
     year = {2002},
     volume = {9},
     doi = {10.37236/1649},
     zbl = {1005.05004},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1649/}
}