Ссылка для цитирования (ENG)
Sil'vanovich Olga V , Shirokov N. A. APPROXIMATION BY ENTIRE FUNCTIONS ON A COUNTABLE UNION OF REAL-AXIS SEGMENTS. 4. INVERSE THEOREM VESTNIK OF THE ST. PETERSBURG UNIVERSITY: MATHEMATICS. 2018. №3. pp. 267-275. https://doi.org/10.3103/S1063454118030081