Struwe, M. Variational methods: Applications to nonlinear partial differential equations and Hamiltonian system.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStruwe, Michael. Variational Methods: Applications to Nonlinear Partial Differential Equations and Hamiltonian System.
एमएलए (9वां संस्करण) प्रशस्ति पत्रStruwe, Michael. Variational Methods: Applications to Nonlinear Partial Differential Equations and Hamiltonian System.
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