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MR 0293280
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MR 0348316 |
Zbl 0291.39009
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MR 0603929
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MR 0542959
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On the measurable solutions of the functional equation $\sum\limits_{i=1}^2 \sum\limits_{j=1}^3 F_{i,j} (p_i q_j) = \sum\limits_{i=1}^2 G_i (p_i) + \sum\limits_{j=1}^3 H_j (q_j)$. Acta Math. Acad. Sci. Hung. 25 (1974), 249-254.
MR 0355401
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