@article{Knauer_2015,
    doi = {10.1007/s00454-015-9667-0},
    url = {https://doi.org/10.1007%2Fs00454-015-9667-0},
    year = {2015},
    month = {feb},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {53},
    number = {2},
    pages = {276--295},
    author = {Christian Knauer and Stefan König and Daniel Werner},
    title = {Fixed-Parameter Complexity and Approximability of Norm Maximization},
    journal = {Discrete {\&} Computational Geometry}
}

@article{Knauer_2015, doi = {10.1007/s00454-015-9667-0}, url = {https://doi.org/10.1007%2Fs00454-015-9667-0}, year = {2015}, month = {feb}, publisher = {Springer Science and Business Media {LLC}}, volume = {53}, number = {2}, pages = {276--295}, author = {Christian Knauer and Stefan König and Daniel Werner}, title = {Fixed-Parameter Complexity and Approximability of Norm Maximization}, journal = {Discrete {\&} Computational Geometry} }