@article{MABA_1988_2_2_a16,
     author = {Vasile Iftode},
     title = {Periodic and {Almost-periodic} {Solutions} for a {Nonlinear} {Operator} {Equation} in {Hilbert} {Space}},
     journal = {Mathematica balkanica},
     pages = {253},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/MABA_1988_2_2_a16/}
}