Henning Bordihn, Bettina Sunckel. On Active Symbols in CD Grammar Systems. Journal of Automata, Languages and Combinatorics, 12(1-2):49-67, 2007.
@article{BordihnS07, title = {On Active Symbols in CD Grammar Systems}, author = {Henning Bordihn and Bettina Sunckel}, year = {2007}, tags = {grammar}, researchr = {https://researchr.org/publication/BordihnS07}, cites = {0}, citedby = {0}, journal = {Journal of Automata, Languages and Combinatorics}, volume = {12}, number = {1-2}, pages = {49-67}, }