@article{GDZPPN002024608, title = {On the Eigenvalues of Sums of Hermitian Matrices. II.}, journal = {Aequationes mathematicae}, volume = {5}, year = {1970}, pages = {103-115}, zbl = {0228.15006}, url = {http://dml.mathdoc.fr/item/GDZPPN002024608} }
Thompson, Robert C.; Freede, Linda J. On the Eigenvalues of Sums of Hermitian Matrices. II.. Aequationes mathematicae, Tome 5 (1970) pp. 103-115. http://gdmltest.u-ga.fr/item/GDZPPN002024608/