Periodic vibrations of systems governed by nonlinear partial differential equations
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Tài liệu tham khảo
Stoker J. J. Periodic motions in non‐linear systems having infinitely many degrees of freedom Actes du Colloque International des Vibrations Non Lineaires Publications Scientifiques et Techniques du Ministères de L'air No. 281 Paris 1953 pp.61–74.
Rabinowitz P. H. Periodic solutions of a nonlinear non‐dissipative wave equation New York University Courant Inst. Math. Sci. Res. Report No. IMM 343 1965.