Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1973__14_3_a9, author = {Mezn{\'\i}k, Ivan}, title = {On some closure properties of generable languages}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {541--552}, publisher = {mathdoc}, volume = {14}, number = {3}, year = {1973}, mrnumber = {0337062}, zbl = {0284.68061}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1973__14_3_a9/} }
Mezník, Ivan. On some closure properties of generable languages. Commentationes Mathematicae Universitatis Carolinae, Tome 14 (1973) no. 3, pp. 541-552. http://geodesic.mathdoc.fr/item/CMUC_1973__14_3_a9/