@article{10_1007_s10587_016_0284_8,
     author = {Hall, Frank J. and Rozlo\v{z}n{\'\i}k, Miroslav},
     title = {G-matrices, $J$-orthogonal matrices, and their sign patterns},
     journal = {Czechoslovak Mathematical Journal},
     pages = {653--670},
     publisher = {mathdoc},
     volume = {66},
     number = {3},
     year = {2016},
     doi = {10.1007/s10587-016-0284-8},
     mrnumber = {3556859},
     zbl = {06644025},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.1007/s10587-016-0284-8/}
}