Kaprekar triples. Iannucci, Douglas E.; Foster, Bertrum — 2005 Journal of Integer Sequences [electronic only]
On consecutive integer pairs with the same sum of distinct prime divisors. Iannucci, Douglas E.; Mintos, Alexia S. — 2005 Integers
On perfect totient numbers. Iannucci, Douglas E.; Deng, Moujie; Cohen, Graeme L. — 2003 Journal of Integer Sequences [electronic only]
Triangular numbers whose sum of divisors is also triangular Douglas E. Iannucci; Florian Luca — 2007 Acta Arithmetica