Bergman, S. (1971). Integral operators in the theory of linear partial differential equations (3rd printing.). Berlin: Springer-Verlag.
Παραπομπή Chicago StyleBergman, Stefan. Integral Operators in the Theory of Linear Partial Differential Equations. 3rd printing. Berlin: Springer-Verlag, 1971.
Παραπομπή MLABergman, Stefan. Integral Operators in the Theory of Linear Partial Differential Equations. 3rd printing. Berlin: Springer-Verlag, 1971.
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