Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{KYB_1973__9_6_a2, author = {Cremers, A. B. and Weiss, K.}, title = {Some further remarks on the index of context-free languages}, journal = {Kybernetika}, pages = {--466}, publisher = {mathdoc}, volume = {09}, number = {6}, year = {1973}, mrnumber = {0395341}, zbl = {0278.68075}, language = {en}, url = {http://geodesic.mathdoc.fr/item/KYB_1973__9_6_a2/} }
Cremers, A. B.; Weiss, K. Some further remarks on the index of context-free languages. Kybernetika, Tome 09 (1973) no. 6, p. 466. http://geodesic.mathdoc.fr/item/KYB_1973__9_6_a2/