APA-viite (7. p.)
Czerwik, S. (2002). Functional equations and inequalities in several variables. World Scientific.
Chicago-viite (17. p.)
Czerwik, Stefan. Functional Equations and Inequalities in Several Variables. River Edge, N.J.: World Scientific, 2002.
MLA-viite (9. p.)
Czerwik, Stefan. Functional Equations and Inequalities in Several Variables. World Scientific, 2002.
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