John, F. (1982). Partial differential equations (4th edition.). New York: Springer-Verlag.
Chicago Stili AlıntıJohn, Fritz. Partial Differential Equations. 4th edition. New York: Springer-Verlag, 1982.
MLA AlıntıJohn, Fritz. Partial Differential Equations. 4th edition. New York: Springer-Verlag, 1982.
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