@article{10_37236_1807,
     author = {Robert A. Sulanke},
     title = {Generalizing {Narayana} and {Schr\"oder} numbers to higher dimensions},
     journal = {The electronic journal of combinatorics},
     year = {2004},
     volume = {11},
     number = {1},
     doi = {10.37236/1807},
     zbl = {1057.05006},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1807/}
}