Mathematical simulation of almost periodic functions with values in Banach space by means of the multiplicator
... операторных уравнений.М., 1962.
8. Левитан Б. М. Почти периодические функции. М., 1953.
Kretov M., Malakhovsky V., Semenov V., Khudenko V.
almost periodic function, Banach space, multiplicator, Fourier series
106-109