1. Fourier coefficients of functions of class $\operatorname{Lip}\alpha$ with respect to complete orthonormalized systems;Bochkarev;Mat. Zametki,1970
2. Fourier coefficients of functions of class $\operatorname{Lip}\alpha$ with respect to complete orthonormalized systems;Bochkarev;Math. Notes,1970
3. On a problem of Zygmund;Bočkarev (Bochkarev);Izv. Akad. Nauk SSSR Ser. Mat.,1973
4. On a problem of Zygmund;Bočkarev (Bochkarev);Math. USSR-Izv.,1973
5. On the absolute convergence of Fourier series in bounded complete orthonormal systems of functions;Bočkarev (Bochkarev);Mat. Sb.,1974