Periodicity of mild solutions to higher order differential equations in Banach spaces.
On nonautonomous second-order differential equations on Banach space.
A note on almost periodic solutions of semilinear equations in Banach spaces.
Almost periodic solutions of higher order differential equations on Hilbert spaces.
On the operator equation with unbounded operators , , and .
On the almost periodic solutions of differential equations on Hilbert spaces.
On the mild solutions of higher-order differential equations in Banach spaces.
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