@article{10_21136_AM_1981_103904,
     author = {Gregor, Ji\v{r}{\'\i}},
     title = {On quadratic {Hurwitz} forms. {I}},
     journal = {Applications of Mathematics},
     pages = {142--153},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {1981},
     doi = {10.21136/AM.1981.103904},
     mrnumber = {0612670},
     zbl = {0457.15016},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1981.103904/}
}