@article{JIS_2005__8_1_a6,
     author = {Callan,  David},
     title = {A combinatorial interpretation for a {super-Catalan} recurrence},
     journal = {Journal of integer sequences},
     year = {2005},
     volume = {8},
     number = {1},
     zbl = {1064.05011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2005__8_1_a6/}
}