@article{ITA_2000__34_1_77_0,
     author = {Ilie, Lucian and Rozenberg, Grzegorz and Salomaa, Arto},
     title = {A characterization of poly-slender context-free languages},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {77--86},
     publisher = {EDP-Sciences},
     volume = {34},
     number = {1},
     year = {2000},
     mrnumber = {1771131},
     zbl = {0966.68097},
     language = {en},
     url = {http://www.numdam.org/item/ITA_2000__34_1_77_0/}
}