Παραπομπή APA

Lavrent'ev, M. A., & Radok, J. R. M. (1989). Variational methods for boundary value problems for systems of elliptic equations. Mineola, NY.: Dover Publications.

Παραπομπή Chicago Style

Lavrent'ev, Mikhail Alekseevich, and J. R. M. Radok. Variational Methods for Boundary Value Problems for Systems of Elliptic Equations. Mineola, NY.: Dover Publications, 1989.

Παραπομπή MLA

Lavrent'ev, Mikhail Alekseevich, and J. R. M. Radok. Variational Methods for Boundary Value Problems for Systems of Elliptic Equations. Mineola, NY.: Dover Publications, 1989.

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