@article{B_rgisser_2007,
    doi = {10.1007/s10208-007-9006-9},
    url = {https://doi.org/10.1007%2Fs10208-007-9006-9},
    year = {2007},
    month = {sep},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {9},
    number = {2},
    pages = {135--170},
    author = {Peter Bürgisser and Felipe Cucker},
    title = {Exotic Quantifiers, Complexity Classes, and Complete Problems},
    journal = {Foundations of Computational Mathematics}
}

@article{B_rgisser_2007, doi = {10.1007/s10208-007-9006-9}, url = {https://doi.org/10.1007%2Fs10208-007-9006-9}, year = {2007}, month = {sep}, publisher = {Springer Science and Business Media {LLC}}, volume = {9}, number = {2}, pages = {135--170}, author = {Peter Bürgisser and Felipe Cucker}, title = {Exotic Quantifiers, Complexity Classes, and Complete Problems}, journal = {Foundations of Computational Mathematics} }