@article{Minkowski_1887,
    doi = {10.1515/crll.1887.101.196},
    url = {https://doi.org/10.1515%2Fcrll.1887.101.196},
    year = {1887},
    publisher = {Walter de Gruyter {GmbH}},
    volume = {1887},
    number = {101},
    pages = {196--202},
    author = {Hermann Minkowski},
    title = {Zur Theorie der positiven quadratischen Formen.},
    journal = {crll}
}

@article{Minkowski_1887, doi = {10.1515/crll.1887.101.196}, url = {https://doi.org/10.1515%2Fcrll.1887.101.196}, year = {1887}, publisher = {Walter de Gruyter {GmbH}}, volume = {1887}, number = {101}, pages = {196--202}, author = {Hermann Minkowski}, title = {Zur Theorie der positiven quadratischen Formen.}, journal = {crll} }