High-Dimensional Nonlinear Multi-Fidelity Model with Gradient-Free Active Subspace Method. Communications in Computational Physics, [S. l.], v. 28, n. 5, p. 1937–1969, 2020. DOI: 10.4208/cicp.OA-2020-0195. Disponível em: https://global-sci.com/index.php/cicp/article/view/6902. Acesso em: 5 dec. 2025.