Tohutoro APA (7th ed.)
Gilbarg, D., & Trudinger, N. S. (1977). Elliptic partial differential equations of second order. Springer.
Tohutoru Kātū Chicago (17th ed.)
Gilbarg, David, me Neil S. Trudinger. Elliptic Partial Differential Equations of Second Order. Berlin, Heidelberg, New York: Springer, 1977.
Tohutoro MLA (9th ed.)
Gilbarg, David, me Neil S. Trudinger. Elliptic Partial Differential Equations of Second Order. Springer, 1977.
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