@article{ELA_2007__16__a24,
     author = {Hershkowitz, Daniel and Pinkus, Allan},
     title = {On nonnegative sign equivalent and sign similar factorizations of matrices},
     journal = {The electronic journal of linear algebra},
     pages = {162--170},
     publisher = {mathdoc},
     volume = {16},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2007__16__a24/}
}