@article{ITA_1992__26_1_93_0, author = {Duske, J. and Middendorf, M. and Parchmann, R.}, title = {Indexed counter languages}, journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications}, pages = {93--113}, publisher = {EDP-Sciences}, volume = {26}, number = {1}, year = {1992}, mrnumber = {1155346}, zbl = {0803.68063}, language = {en}, url = {http://www.numdam.org/item/ITA_1992__26_1_93_0/} }