Παραπομπή APA

Showalter, R. E. (1979). Hilbert space methods for partial differential equations. San Francisco: Pitman Advanced Publishing Program.

Παραπομπή Chicago Style

Showalter, R. E. Hilbert Space Methods for Partial Differential Equations. San Francisco: Pitman Advanced Publishing Program, 1979.

Παραπομπή MLA

Showalter, R. E. Hilbert Space Methods for Partial Differential Equations. San Francisco: Pitman Advanced Publishing Program, 1979.

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