@article{10_37236_1518,
     author = {Robert A. Sulanke},
     title = {Counting lattice paths by {Narayana} polynomials},
     journal = {The electronic journal of combinatorics},
     year = {2000},
     volume = {7},
     doi = {10.37236/1518},
     zbl = {0953.05006},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1518/}
}