Partial difference equations analogous to the Cauchy-Riemann equations

MR0634895 Acz{é}l, J. and Haruki, S. J. ACZÉL and S. HARUKI Partial difference equations analogous to the Cauchy-Riemann equations Fako de l'Funkcialaj Ekvacioj Japana Matematika Societo. Funkcialaj Ekvaciog. Serio Internacia 24 1981 95--102 http://fe.math.kobe-u.ac.jp/FE/Free/vol24/fe24-1-7.pdf http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE21-30-en_KML/fe24-095-102/fe24-095-102.pdf http://www.ams.org/mathscinet-getitem?mr=MR0634895 fe24-095-102 1981 Partial Difference Equations Analogous to the Cauchy-Riemann Equations ACZ\'EL, J.; HARUKI, S. ACZ\'EL, J.; HARUKI, S. 1 Aczél, J. Lectures on Functional Equations and Their Applications Academic Press, New York and London 1966 MR0208210 100 Cache/Ac/Aczél,Applications,*,1966,1967 xx+510

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