@article{10_37236_1728,
     author = {R. Brak and J. W. Essam},
     title = {Bicoloured {Dyck} paths and the contact polynomial for \(n\) non-intersecting paths in a half-plane lattice},
     journal = {The electronic journal of combinatorics},
     year = {2003},
     volume = {10},
     doi = {10.37236/1728},
     zbl = {1023.05006},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1728/}
}