@article{AlSaafinGarloff2020, author = {Doaa Al-Saafin and J{\"u}rgen Garloff}, title = {Sufficient conditions for symmetric matrices to have exactly one positive eigenvalue}, journal = {Special Matrices}, volume = {8}, number = {1}, pages = {98 -- 103}, doi = {10.1515/spma-2020-0009}, year = {2020}, }