%0 Journal Article %A G. A. Kurina %T Solvability of a boundary value problem for a nonnegative Hamiltonian system in a Hilbert space %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2003 %P 45-47 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2003_7_a5/ %G ru %F IVM_2003_7_a5