@article{Sch_ning_1997,
    doi = {10.1007/bf02679468},
    url = {https://doi.org/10.1007%2Fbf02679468},
    year = {1997},
    month = {aug},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {30},
    number = {4},
    pages = {423--428},
    author = {U. Schöning},
    title = {Complexity of presburger arithmetic with fixed quantifier dimension},
    journal = {Theory of Computing Systems}
}

@article{Sch_ning_1997, doi = {10.1007/bf02679468}, url = {https://doi.org/10.1007%2Fbf02679468}, year = {1997}, month = {aug}, publisher = {Springer Science and Business Media {LLC}}, volume = {30}, number = {4}, pages = {423--428}, author = {U. Schöning}, title = {Complexity of presburger arithmetic with fixed quantifier dimension}, journal = {Theory of Computing Systems} }