@article{ELA_2005__13__a19,
     author = {Hershkowitz, Daniel and Keller, Nathan},
     title = {Spectral properties of sign symmetric matrices},
     journal = {The electronic journal of linear algebra},
     pages = {90--110},
     publisher = {mathdoc},
     volume = {13},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2005__13__a19/}
}