1. Agaev, G.N.: A theorem of Wiener type for series with respect to Walsh system. Doklady AN SSSR. 142 (4), 751–753 (1962) [in Russian].
2. Agaev, G.N., Vilenkin, N.Ya, Dzhafarli, G.M., Rubinstein A.I.: Multiplicative systems of functions and harmonic analysis on zero-dimensional groups, Elm, Baku (1981) [in Russian].
3. Akkar, M., El Kinani, A., Oudadess, M.: Calculus fonctionnels harmonique et analytque réel. Ann. Sci. Math. Québec. 12(2), 151–169 (1988).
4. Alpar, L.: Généralisation d’un théoreme de Wiener et de Lévy. Acta Math. Hung. 21 (1-2), 11–19 (1970).
5. Bhat, S.J., Dabhi, P.A., Dedania, H.V.: Beurling algebra analogues of Wiener-Lévy-Żelazko and Żelazko. Studia Math. 195 (3), 219–225 (2009).