%0 Journal Article %A Sternberg, Robert L. %T A theorem on Hermitian solutions for related matrix differential and integral equations %J Portugaliae mathematica %D 1953 %P 135-139 %V 12 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1953__12_4_114724/ %G en %F PORMA_1953__12_4_114724