MR0961750
Nikodem, Kazimierz
Kazimierz NIKODEM
Set-valued solutions of the Pexider functional equation
Funkcialaj Ekvacioj. Serio Internacia
31
1988
227--231
http://fe.math.kobe-u.ac.jp/FE/Free/vol31/fe31-2-5.pdf
http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE31-34-en_KML/fe31-227-231/fe31-227-231.pdf
http://www.ams.org/mathscinet-getitem?mr=MR0961750
fe31-227-231
1988
Set-Valued Solutions of the Pexider Functional Equation
NIKODEM, Kazimierz
NIKODEM, Kazimierz
1
Kuczma, M.
An introduction to the theory of functional equations and inequalities. Cauchy's equation and Jensen's inequality
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Nikodem, K.
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