Struwe, M. (2008). Variational methods: Applications to nonlinear partial differential equations and Hamiltonian systems (4th ed.). Berlin: Springer.
Παραπομπή Chicago StyleStruwe, Michael. Variational Methods: Applications to Nonlinear Partial Differential Equations and Hamiltonian Systems. 4th ed. Berlin: Springer, 2008.
Παραπομπή MLAStruwe, Michael. Variational Methods: Applications to Nonlinear Partial Differential Equations and Hamiltonian Systems. 4th ed. Berlin: Springer, 2008.
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