@article{DAN_1963_152_6_a5,
     author = {V. I. Derguzov},
     title = {On the stability of the solutions of {Hamiltonian} equations in {Hilbert} space with unbounded periodic operator coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {1294--1296},
     publisher = {mathdoc},
     volume = {152},
     number = {6},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_152_6_a5/}
}