1. BEURLING, A., On two problems concerning linear transformations in Hilbert space. Acta Math., 81 (1949), 239–255.
2. BOAS, R., Entire Functions. Academic Press, New York, 1954.
3. CARLEMAN, T., L’intégrale de Fourier et questions qui s’y rattachent. Uppsala 1944.
4. DOMAR, Y., Closed primary ideals on a class of Banach algebras. Math. Scand., 7 (1959), 106–125.
5. HAČATRJAN, I. O., Weighted approximation of entire functions of degree 0 by polynomials on the real axis. Dokl. Akad. Nauk SSSR, 145 (1962), 744–747