%0 Journal Article %A V. I. Derguzov %T On the stability of the solutions of Hamiltonian equations in Hilbert space with unbounded periodic operator coefficients %J Doklady Akademii Nauk %D 1963 %P 1294-1296 %V 152 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_152_6_a5/ %G ru %F DAN_1963_152_6_a5