Zeros of Dirichlet L-functions, Ann. Scient. Ecole Norm. Sup, vol.25, pp.567-615, 1992. ,
On an extremal problem, Trans. Moscow Math. Soc, vol.18, pp.91-99, 1968. ,
An asymptotic estimate related to Selberg's sieve, J. Number Theory, vol.10, pp.83-94, 1978. ,
On Linnik's constant, Acta Arith, vol.39, pp.163-179, 1981. ,
On Linnik's constant, Math. Scand, vol.41, pp.45-62, 1977. ,
On a problem in the theory of sieve methods, Kokyuroku RIMS, vol.222, pp.9-50, 1974. ,
, , vol.40