Struwe, M. Variational methods: Applications to nonlinear partial differential equations and Hamiltonian system.
Chicago-viite (17. p.)Struwe, Michael. Variational Methods: Applications to Nonlinear Partial Differential Equations and Hamiltonian System.
MLA-viite (9. p.)Struwe, Michael. Variational Methods: Applications to Nonlinear Partial Differential Equations and Hamiltonian System.
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