%0 Journal Article %A T. Ya. Azizov %A V. K. Kiriakidi %A G. A. Kurina %T An Indefinite Approach to the Reduction of a Nonnegative Hamiltonian Operator Function to a Block Diagonal Form %J Funkcionalʹnyj analiz i ego priloženiâ %D 2001 %P 73-75 %V 35 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_2001_35_3_a6/ %G ru %F FAA_2001_35_3_a6