POPOV, M. M.; FOTII, O. G. APPROXIMATION OF NARROW OPERATORS ON THE SPACE L1 BY RANK ONE OPERATORS. METHODS AND DEVICES OF QUALITY CONTROL, [S. l.], n. 1(52), p. 94–97, 2024. DOI: 10.31471/1993-9981-2024-1(52)-94-97. Disponível em: https://mpky.nung.edu.ua/index.php/mpky/article/view/642. Acesso em: 10 mar. 2025.