@article{FINKEL_2006,
    doi = {10.1017/s0960129506005597},
    url = {https://doi.org/10.1017%2Fs0960129506005597},
    year = {2006},
    month = {oct},
    publisher = {Cambridge University Press ({CUP})},
    volume = {16},
    number = {05},
    pages = {813},
    author = {OLIVIER FINKEL},
    title = {Borel ranks and Wadge degrees of context free {\textdollar}{\textbackslash}omega{\textdollar}-languages},
    journal = {Mathematical Structures in Computer Science}
}

@article{FINKEL_2006, doi = {10.1017/s0960129506005597}, url = {https://doi.org/10.1017%2Fs0960129506005597}, year = {2006}, month = {oct}, publisher = {Cambridge University Press ({CUP})}, volume = {16}, number = {05}, pages = {813}, author = {OLIVIER FINKEL}, title = {Borel ranks and Wadge degrees of context free {\textdollar}{\textbackslash}omega{\textdollar}-languages}, journal = {Mathematical Structures in Computer Science} }