Dung T. Huynh. Commutative Grammars: The Complexity of Uniform Word Problems. Inf. Comput., 57(1):21-39, April 1983.
@article{Huynh83, title = {Commutative Grammars: The Complexity of Uniform Word Problems}, author = {Dung T. Huynh}, year = {1983}, month = {April}, tags = {grammar}, researchr = {https://researchr.org/publication/Huynh83}, cites = {0}, citedby = {0}, journal = {Inf. Comput.}, volume = {57}, number = {1}, pages = {21-39}, }