[1] DE BRUIJN N. G.: Bijna periodieke multiplicative nineties. Nieuw Arch. Wiskd. 32 (1943), 81-95.
[2] GELFAND I. M.: Normed Rings. Mat. Sb. 9 (1941), 3-24.
[3] HEWITT E., ROSS K. A.:
Abstract Harmonic Analysis, I, II. Berlin-Heidelberg-New York 1963, 1970.
MR 0156915
[4] KRYŽIUS Z.:
Almost even arithmetical functions on semigroups. (Russian). Litov. Mat. Sb. 25 (1985), No. 2, 90-101.
MR 0814459
[5] KRIŽIUS Z. :
Limit periodic arithmetical functions. (Russian). Litov. Mat. Sb. 25 (1985), No. 3, 93-103.
MR 0823646
[9] SCHWARZ W.:
Remarks on the theorem of Elliott and Daboussi, and applications. In Proc. 20 th sem. Warszawa 1982. Banach Center Publications 17, Warszawa 1985, pp. 463-498.
MR 0840490
[10] SCHWARZ W., SPILKER J.:
Eine Anwendung des Approximationssatzes von Weierstraß-Stone auf Ramanujan-Summen. Nieuw Arch. Wiskd. (3) 19 (1971), 198-209.
MR 0332704 |
Zbl 0221.10007
[11] SCHWARZ W., SPILKER J.:
Mean values and Ramanujan expansions of almost even arithmetical functions. In Coll. Math. Soc. J. Bolyai 13. Topics in Number Theory Debreczen, 1974, pp. 315-357.
MR 0447165