[1]
Brak, R. and Essam, J.W. 2003. Bicoloured Dyck Paths and the Contact Polynomial for $n$ Non-Intersecting Paths in a Half-Plane Lattice. The Electronic Journal of Combinatorics. 10, 1 (Sep. 2003), R35. DOI:https://doi.org/10.37236/1728.