Tóth, László On the asymptotic densities of certain subsets of \(\mathbb N^k\). (English) Zbl 1014.11005 Riv. Mat. Univ. Parma (6) 4, 121-131 (2001). Reviewer: Jürgen Spilker (Freiburg i.Br.) MSC: 11A25 11N37 PDFBibTeX XMLCite \textit{L. Tóth}, Riv. Mat. Univ. Parma (6) 4, 121--131 (2001; Zbl 1014.11005) Full Text: arXiv
Tóth, László Asymptotic formulae concerning arithmetical functions defined by cross-convolutions. VIII: On the product and the quotient of \(\sigma_{A,s}\) and \(\varphi_{A,s}\). (English) Zbl 1041.11002 Riv. Mat. Univ. Parma (6) 2, 199-206 (1999). MSC: 11A25 11N37 PDFBibTeX XMLCite \textit{L. Tóth}, Riv. Mat. Univ. Parma (6) 2, 199--206 (1999; Zbl 1041.11002)