Sneddon, I. N. (1957). Elements of partial differential equations. New York: McGraw-Hill Book Company.
Παραπομπή Chicago StyleSneddon, Ian N. Elements of Partial Differential Equations. New York: McGraw-Hill Book Company, 1957.
Παραπομπή MLASneddon, Ian N. Elements of Partial Differential Equations. New York: McGraw-Hill Book Company, 1957.
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