EFTEKHARINASAB, K. On the existence of a global diffeomorphism between Fréchet spaces. Methods of Functional Analysis and Topology, [S. l.], v. 26, n. 1, p. 68–75, 2020. DOI: https://doi.org/10.31392/MFAT-npu26_1.2020.05. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/745. Acesso em: 13 dec. 2025.