1. A. O. Gel'fond, “Sur les systèmes complets des fonctions analytiques,”Mat. Sb. [Math. USSR-Sb.],4 (46), 149–156 (1938).
2. A. I. Markushevich, “On a basis in the space of analytic functions,”Mat. Sb. [Math. USSR-Sb.],17 (59), 211–252 (1945).
3. I. I. Ibragimov, “On completeness of the system of analytic functions $$\{ f(\alpha kz)\} $$ ,”Izv. Akad. Nauk SSSR. Ser. Mat. [Math. USSR-Izv.],13, No. 1, 45–54 (1949).
4. I. I. Ibragimov,Methods for the Interpolation of Functions, and Some of Their Applications [in Russian], Nauka, Moscow (1971).
5. B. Ya. Levin,Distribution of Roots of Entire Functions [in Russian], Fizmatgiz, Moscow (1956).