%0 Journal Article %A Da Fonseca, C.M. %T A lower bound for the number of distinct eigenvalues of some real symmetric matrices %J The electronic journal of linear algebra %D 2010 %P 3-11 %V 21 %I mathdoc %U http://geodesic.mathdoc.fr/item/ELA_2010__21__a12/ %G en %F ELA_2010__21__a12