@article{Harrison_1973,
    doi = {10.1016/s0022-0000(73)80008-x},
    url = {https://doi.org/10.1016%2Fs0022-0000%2873%2980008-x},
    year = {1973},
    month = {jun},
    publisher = {Elsevier {BV}},
    volume = {7},
    number = {3},
    pages = {237--277},
    author = {Michael A. Harrison and Ivan M. Havel},
    title = {Strict deterministic grammars},
    journal = {Journal of Computer and System Sciences}
}

@article{Harrison_1973, doi = {10.1016/s0022-0000(73)80008-x}, url = {https://doi.org/10.1016%2Fs0022-0000%2873%2980008-x}, year = {1973}, month = {jun}, publisher = {Elsevier {BV}}, volume = {7}, number = {3}, pages = {237--277}, author = {Michael A. Harrison and Ivan M. Havel}, title = {Strict deterministic grammars}, journal = {Journal of Computer and System Sciences} }