Lua APA (7ú heag.)

Não informado. (1993). Calculus of Variations and Partial Differential Equations. Springer Verlag.

Lua i Stíl Chicago (17ú heag.)

Não informado. Calculus of Variations and Partial Differential Equations. Berlin: Springer Verlag, 1993.

Lua MLA (8ú heag.)

Não informado. Calculus of Variations and Partial Differential Equations. Springer Verlag, 1993.

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