%0 Journal Article %A Grubišić, Luka %A Miodragović, Suzana %A Truhar, Ninoslav %T Double angle theorems for definite matrix pairs %J Electronic transactions on numerical analysis %D 2016 %P 33-57 %V 45 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_2016__45__a23/ %G en %F ETNA_2016__45__a23