Article 03.2.5:
Jean-Marie De Koninck and Nicolas Doyon,
"Large and Small Gaps Between Consecutive Niven Numbers"
(Abstract,
pdf,
ps,
dvi,
tex)
Article 03.2.6:
O-Yeat Chan, Geumlan Choi, and Alexandru Zaharescu,
"A Multidimensional Version of a Result of
Davenport-Erdös"
(Abstract,
pdf,
ps,
dvi,
tex)