@article{SLC_2000-2001_44_a4,
     author = {Alain Lascoux},
     title = {Motzkin {Paths} and {Powers} of {Continued} {Fractions}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {44},
     year = {2000-2001},
     url = {http://geodesic.mathdoc.fr/item/SLC_2000-2001_44_a4/}
}