Media type: E-Article Title: Matrices and Their (Un)Faithful Fermi-quadratic Forms Contributor: Hardy, Yorick; Steeb, Willi-Hans; Kemp, Garreth imprint: Springer Science and Business Media LLC, 2019 Published in: International Journal of Theoretical Physics Language: English DOI: 10.1007/s10773-019-04034-6 ISSN: 1572-9575; 0020-7748 Keywords: Physics and Astronomy (miscellaneous) ; General Mathematics Origination: Footnote: