On the existence of periodic solutions of a semilinear wave equation with a superlinear forcing term
1988 ◽
Vol 38
(1)
◽
pp. 78-87
◽
2020 ◽
Vol 26
◽
pp. 7
1987 ◽
Vol 38
(2)
◽
pp. 204-212
◽
Existence of multiple periodic solutions to a semilinear wave equation with x-dependent coefficients
2019 ◽
Vol 150
(5)
◽
pp. 2586-2606
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