Kuczma, M. (1985). An introduction to the theory of functional equations and inequalities. Cauchy's equation and Jensen's inequality. Państwowe Wydawnictwo Naukowe.
Citácia podle Chicago (17th ed.)Kuczma, Marek. An Introduction to the Theory of Functional Equations and Inequalities. Cauchy's Equation and Jensen's Inequality. Warszawa: Państwowe Wydawnictwo Naukowe, 1985.
Citácia podľa MLA (8th ed.)Kuczma, Marek. An Introduction to the Theory of Functional Equations and Inequalities. Cauchy's Equation and Jensen's Inequality. Państwowe Wydawnictwo Naukowe, 1985.
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