@article{10_37236_4781,
     author = {Roy Oste and Joris Van der Jeugt},
     title = {Motzkin paths, {Motzkin} polynomials and recurrence relations},
     journal = {The electronic journal of combinatorics},
     year = {2015},
     volume = {22},
     number = {2},
     doi = {10.37236/4781},
     zbl = {1310.05013},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/4781/}
}