Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1982_16_2_a12, author = {B. V. Lidskii}, title = {Spectral polyhedron of a sum of two {Hermitian} matrices}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {76--77}, publisher = {mathdoc}, volume = {16}, number = {2}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1982_16_2_a12/} }
B. V. Lidskii. Spectral polyhedron of a sum of two Hermitian matrices. Funkcionalʹnyj analiz i ego priloženiâ, Tome 16 (1982) no. 2, pp. 76-77. http://geodesic.mathdoc.fr/item/FAA_1982_16_2_a12/