Divisibility of the κ-fold iterated divisor function of n into n Claudia Spiro-Silverman — 1994 Acta Arithmetica
When the group-counting function assumes a prescribed integer value at squarefree integers frequently, but not extremely frequently Claudia A. Spiro-Silverman — 1992 Acta Arithmetica
Extensions of some formulae of A. Selberg. Spiro, Claudia A. — 1985 International Journal of Mathematics and Mathematical Sciences