@article{10_4153_CJM_1987_068_9,
     author = {Pierce, Stephen and Rodman, Leiba},
     title = {Congruences and {Norms} of {Hermitian} {Matrices}},
     journal = {Canadian journal of mathematics},
     pages = {1446--1458},
     year = {1987},
     volume = {39},
     number = {6},
     doi = {10.4153/CJM-1987-068-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1987-068-9/}
}