@incollection{SB_1997-1998__40__255_0,
     author = {Fulton, William},
     title = {Eigenvalues of sums of hermitian matrices},
     booktitle = {S\'eminaire Bourbaki : volume 1997/98, expos\'es 835-849},
     series = {Ast\'erisque},
     note = {talk:845},
     pages = {255--269},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {252},
     year = {1998},
     mrnumber = {1685640},
     zbl = {0929.15006},
     language = {en},
     url = {http://www.numdam.org/item/SB_1997-1998__40__255_0/}
}