@article{JIS_2008__11_1_a4,
     author = {Blasiak, P. and Dattoli, G. and Horzela, A. and Penson, K.A. and Zhukovsky, K.},
     title = {Motzkin numbers, central trinomial coefficients and hybrid polynomials},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2008__11_1_a4/}
}