Ekeland, I. (1999). Convex analysis and variational problems. Society for Industrial and Applied Mathematics.
Lua i Stíl Chicago (17ú heag.)Ekeland, Ivar. Convex Analysis and Variational Problems. Philadelphia: Society for Industrial and Applied Mathematics, 1999.
Lua MLA (9ú heag.)Ekeland, Ivar. Convex Analysis and Variational Problems. Society for Industrial and Applied Mathematics, 1999.
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