@article{10_4153_CJM_1977_035_3,
     author = {Jeffries, Clark and Klee, Victor and Driessche, Pauline Van Den},
     title = {When is a {Matrix} {Sign} {Stable?}},
     journal = {Canadian journal of mathematics},
     pages = {315--326},
     year = {1977},
     volume = {29},
     number = {2},
     doi = {10.4153/CJM-1977-035-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-035-3/}
}