@article{LEHTINEN_2010,
    doi = {10.1142/s0129054110007568},
    url = {https://doi.org/10.1142%2Fs0129054110007568},
    year = {2010},
    month = {oct},
    publisher = {World Scientific Pub Co Pte Lt},
    volume = {21},
    number = {05},
    pages = {799--815},
    author = {TOMMI LEHTINEN and ALEXANDER OKHOTIN},
    title = {{BOOLEAN} {GRAMMARS} {AND} {GSM} {MAPPINGS}},
    journal = {International Journal of Foundations of Computer Science}
}

@article{LEHTINEN_2010, doi = {10.1142/s0129054110007568}, url = {https://doi.org/10.1142%2Fs0129054110007568}, year = {2010}, month = {oct}, publisher = {World Scientific Pub Co Pte Lt}, volume = {21}, number = {05}, pages = {799--815}, author = {TOMMI LEHTINEN and ALEXANDER OKHOTIN}, title = {{BOOLEAN} {GRAMMARS} {AND} {GSM} {MAPPINGS}}, journal = {International Journal of Foundations of Computer Science} }