@article{10_37236_2477,
     author = {Michael Z. Spivey},
     title = {Enumerating lattice paths touching or crossing the diagonal at a given number of lattice points},
     journal = {The electronic journal of combinatorics},
     year = {2012},
     volume = {19},
     number = {3},
     doi = {10.37236/2477},
     zbl = {1253.05020},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2477/}
}