@article{GDZPPN001175831,
title = {On Some new Inclusion Theorems for the Eigenvalues of Partitioned Matrices.},
journal = {Numerische Mathematik},
volume = {35},
year = {1980},
pages = {431-438},
zbl = {0433.65020},
url = {http://dml.mathdoc.fr/item/GDZPPN001175831}
}
Veselic, K.; Meyer, D. On Some new Inclusion Theorems for the Eigenvalues of Partitioned Matrices.. Numerische Mathematik, Tome 35 (1980) pp. 431-438. http://gdmltest.u-ga.fr/item/GDZPPN001175831/