Harry B. Hunt III, Daniel J. Rosenkrantz, Thomas G. Szymanski. The Covering Problem for Linear Context-Free Grammars. Theoretical Computer Science, 2(3):361-382, 1976.
@article{HuntRS76:0, title = {The Covering Problem for Linear Context-Free Grammars}, author = {Harry B. Hunt III and Daniel J. Rosenkrantz and Thomas G. Szymanski}, year = {1976}, tags = {context-aware, grammar}, researchr = {https://researchr.org/publication/HuntRS76%3A0}, cites = {0}, citedby = {0}, journal = {Theoretical Computer Science}, volume = {2}, number = {3}, pages = {361-382}, }