Smith, M. G. (1967). Introduction to the theory of partial differential equations. London: D. Van Nostrand Company.
Παραπομπή Chicago StyleSmith, M. G. Introduction to the Theory of Partial Differential Equations. London: D. Van Nostrand Company, 1967.
Παραπομπή MLASmith, M. G. Introduction to the Theory of Partial Differential Equations. London: D. Van Nostrand Company, 1967.
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