GIL', M. On Location of the Spectrum of an Operator with a Hilbert-Schmidt Resolvent in the Left Half-Plane. Methods of Functional Analysis and Topology, [S. l.], v. 27, n. 4, p. 340–347, 2021. DOI: https://doi.org/10.31392/MFAT-npu26_4.2021.07. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/809. Acesso em: 15 dec. 2025.