Includes bibliographical references.

Ternary quadratic forms, and sums of three squares with restricted variables ; Entiers ayant exactement diviseurs dans un intervalle donne ; On the proportion of numbers coprime to a given integer ; Integers with a divisor in y,2y] ; Power-free values, repulsion between points, differing beliefs and the existence of error ; Anatomy of integers and cyclotomic polynomials ; Parite des valeurs de la fonction de partition (n) et anatomie des entiers ; The distribution of smooth numbers in arithmetic progressions ; Moyennes de certaines fonctions multiplicatives sur les entiers friables, 4 ; Uniform distribution of zeros of Dirichlet series ; On primes represented by quadratic polynomials ; Descartes numbers ; A combinatorial method for developing Lucas sequence identities ; On the difference of arithmetic functions at consecutive arguments ; Pretentious multiplicative functions and an inequality for the zeta-function ; On the distribution of omega (n) ; The Erdos-Kac theorem and its generalizations ; On a conjecture of Montgomery-Vaughan on extreme values of automorphic functions at 1 ; The Mobius function in short intervals ; An explicit approach to hypothesis H for polynomials over a finite field ; On prime factors of integers which are sums or shifted products ; Simultaneous approximation of reals by values of arithmetic functions