@article{ARM_1987__23_3_a1,
     author = {Fut\'ak, J\'an},
     title = {On boundedness and stability of solutions of nonlinear second order differential equations in {Hilbert} spaces},
     journal = {Archivum mathematicum},
     pages = {147--154},
     publisher = {mathdoc},
     volume = {23},
     number = {3},
     year = {1987},
     mrnumber = {930317},
     zbl = {0634.34046},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1987__23_3_a1/}
}