@article{ITA_1977__11_1_53_0,
     author = {Wrathall, Celia},
     title = {Characterizations of the {Dyck} sets},
     journal = {RAIRO. Informatique th\'eorique},
     pages = {53--62},
     publisher = {Centrale des revues, Dunod-Gauthier-Villars},
     address = {Montreuil},
     volume = {11},
     number = {1},
     year = {1977},
     mrnumber = {483787},
     zbl = {0354.68104},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1977__11_1_53_0/}
}