Jeffrey S. Rohl. A Note on Backus Naur Form. Comput. J., 10(4):336-337, 1968. [doi]
@article{Rohl68, title = {A Note on Backus Naur Form}, author = {Jeffrey S. Rohl}, year = {1968}, doi = {10.1093/comjnl/10.4.336}, url = {https://doi.org/10.1093/comjnl/10.4.336}, researchr = {https://researchr.org/publication/Rohl68}, cites = {0}, citedby = {0}, journal = {Comput. J.}, volume = {10}, number = {4}, pages = {336-337}, }