%0 Journal Article %1 journals/jacm/GrayH72 %A Gray, Jim %A Harrison, Michael A. %D 1972 %J J. ACM %K dblp %N 4 %P 675-698 %T On the Covering and Reduction Problems for Context-Free Grammars. %U http://dblp.uni-trier.de/db/journals/jacm/jacm19.html#GrayH72 %V 19

@article{journals/jacm/GrayH72, added-at = {2018-11-06T00:00:00.000+0100}, author = {Gray, Jim and Harrison, Michael A.}, biburl = {https://www.bibsonomy.org/bibtex/28b56d2e4a69e4d7234bd91e2d745ee9f/dblp}, ee = {https://doi.org/10.1145/321724.321732}, interhash = {e98e90854c56e09b34034f9b60685930}, intrahash = {8b56d2e4a69e4d7234bd91e2d745ee9f}, journal = {J. ACM}, keywords = {dblp}, number = 4, pages = {675-698}, timestamp = {2018-11-07T12:10:54.000+0100}, title = {On the Covering and Reduction Problems for Context-Free Grammars.}, url = {http://dblp.uni-trier.de/db/journals/jacm/jacm19.html#GrayH72}, volume = 19, year = 1972 }