Topics in arithmetical functions : asymptotic formulae for sums of reciprocals of arithmetical functions and related results / J.-M. de Koninck and A. Ivic. Koninck, J.-M. de, 1948- Ivic, A., 1949- joint author. Arithmetic functions. QA1 .N86 no. 72 QA245 513 19 KOT Includes bibliographical references and index. Amsterdam : North-Holland Pub. Co. , c1980. c1980. 1980 Text xvii, 262 p. : eng North-Holland mathematics studies ; 43 Notas de matematica ; 72 Notas de matematica (Rio de Janeiro, Brazil) ; no. 72.