@article{02186896, title = {A combinatorial interpretation for a super-Catalan recurrence.}, journal = {Journal of Integer Sequences [electronic only]}, volume = {8}, year = {2005}, zbl = {1064.05011}, language = {en}, url = {http://dml.mathdoc.fr/item/02186896} }
Callan, David. A combinatorial interpretation for a super-Catalan recurrence.. Journal of Integer Sequences [electronic only], Tome 8 (2005) . http://gdmltest.u-ga.fr/item/02186896/