131-145 | Another approach to the classical calculus of variations. III. Chrastina, Jan |
147-154 | On boundedness and stability of solutions of nonlinear second order differential equations in Hilbert spaces. Futák, Ján |
155-170 | Lepagean 2-forms in higher order Hamiltonian mechanics. II. Inverse problem. Krupková, Olga |
171-180 | On the asymptotic stability of two-dimensional linear systems. Osička, Jan |
181-186 | Second order strong divisibility sequences in an algebraic number field. Schinzel, A. |