Gilbarg, D., Trudinger, N. S., & Trudinger, N. S. (1977). Elliptic partial differential equations of second order. Berlin New York: Springer-Verlag.
Παραπομπή Chicago StyleGilbarg, David, Neil S. Trudinger, and Neil S. Trudinger. Elliptic Partial Differential Equations of Second Order. Berlin New York: Springer-Verlag, 1977.
Παραπομπή MLAGilbarg, David, Neil S. Trudinger, and Neil S. Trudinger. Elliptic Partial Differential Equations of Second Order. Berlin New York: Springer-Verlag, 1977.
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