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On Set-Valued Solutions of a Generalized Bi-quadratic Functional Equation
EL-Fassi, Iz-iddine, El-Hady, El-Sayed, Nikodem, KazimierzVolume:
75
Journal:
Results in Mathematics
DOI:
10.1007/s00025-020-01225-0
Date:
September, 2020
File:
PDF, 340 KB
2020