Chen's theorem in short intervals
Coincidences in the values of the Euler and Carmichael functions
Comportement Moyen du Cardinal de Certains Ensembles de Facteurs Premiers.
Composite positive integers whose sum of prime factors is prime
In this note, we show that the counting function of the number of composite positive integers such that is a prime is of order of magnitude at least and at most .
Conditional bounds for small prime solutions of linear equations.
Correction au travail "Sur la densité de certains ensembles de multiples, 1", (Acta Arith. 69 (1995), 121-152)
Correction to the paper: On the sum-of-Divisors Function of the numbers of Fermat and Ferentinou-Nicolacopoulou
Distribution des nombres -libres dans de petits intervalles
Distribution of values of Euler's function over integers free of large prime factors
Divisibility of the κ-fold iterated divisor function of n into n
Divisor problems of 4 and 3 dimensions
Divisors of the Euler and Carmichael functions
Dvě poznámky k teorii číselné
Eine Bemerkung über die Anzahl der Zahlen pr² unterhalb x
Eine Bemerkung zu einem Ergebnis von N.G. Bruijn.
Entiers sans grand ni petit facteur premier I
Entiers sans grand ni petit facteur premier II
Entiers sans grand ni petit facteur premier III
Finding almost squares
Finding almost squares. II.