### Arithmetic functions and ~~summatory functions~~

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[4] :
“Lower bounds for __\( \sum h(m)/m \)__ for arithmetical functions __\( h \)__ similar to real residue-characters,”
J. Math. Anal. Appl.
15 : 1
(July 1966),
pp. 2–20.
Dedicated to H. S. Vandiver on his eighty-third birthday.
MR
0199164
Zbl
0144.27803
article

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[6] : “The arithmetic mean of the divisors of an integer,” pp. 197–220 in Analytic number theory (Philadelphia, PA, 12–15 May 1980). Edited by M. I. Knopp. Lecture Notes in Mathematics 899. Springer (Berlin), 1981. Dedicated to Emil Grosswald on the occasion of his sixty-eighth birthday. MR 654528 Zbl 0478.10027 incollection

[7] : “On the oscillation theorems of Pringsheim and Landau,” pp. 43–54 in Number theory. Edited by R. P. Bambah, V. C. Dumir, and R. J. Hans-Gill. Trends in Mathematics. Birkhäuser (Basel), 2000. MR 1764795 Zbl 0964.11037 incollection