%0 Journal Article %A Kovanic, Pavel %T On the pseudoinverse of a sum of symmetric matrices with applications to estimation %J Kybernetika %D 1979 %P -348 %V 15 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1979__15_5_a0/ %G en %F KYB_1979__15_5_a0