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2. Gajewski, H., Gröger, K., and Zacharias, K., Nichtlineare Operatorgleichungen und Operatordifferentialgleichungen, Berlin: Akademie-Verlag, 1974. Translated under the title Nelineinye operatornye uravneniya i operatornye differentsial’nye uravneniya, Moscow: Mir, 1978.
3. Lions, J.-L., Quelques méthodes de résolution des problèmes aux limites nonlinéaires, Paris: Dunod, 1969. Translated under the title Nekotorye metody resheniya nelineinykh kraevykh zadach, Moscow: Mir, 1972.
4. Lions, J.-L., Contrôle des systèmes distribués singuliers, Paris: Gauthier-Villars, 1983. Translated under the title Upravlenie singulyarnymi raspredelennymi sistemami, Moscow: Nauka, 1987.
5. Fursikov, A.V., Optimal’noe upravlenie raspredelennymi sistemami. Teoriya i prilozheniya (Optimal Control for Distributed Systems. Theory and Applications), Novosibirsk: Nauchnaya kniga, 1999.