Alan J. Demers. Elimination of Single Productions and Merging Nonterminal Symbols of LR(1) Grammars. Computer Languages, Systems \& Structures, 1(2):105-119, 1976.
@article{Demers76, title = {Elimination of Single Productions and Merging Nonterminal Symbols of LR(1) Grammars}, author = {Alan J. Demers}, year = {1976}, tags = {grammar}, researchr = {https://researchr.org/publication/Demers76}, cites = {0}, citedby = {0}, journal = {Computer Languages, Systems \& Structures}, volume = {1}, number = {2}, pages = {105-119}, }