Koval'chik F B

Publications in Math-Net.Ru

1. Some analogies of the Hardy–Littlewood equation
   
   Zap. Nauchn. Sem. LOMI, 116 (1982),  86–95
2. Certain analogues of the Hardy–Litlewood problem and density methods
   
   Zap. Nauchn. Sem. LOMI, 112 (1981),  121–142
3. Density theorems and the distribution of primes in sectors and progressions
   
   Dokl. Akad. Nauk SSSR, 219:1 (1974),  31–34