AKASHI, S.; TOMOFUMI MATSUZAWA. A version of Hilbert’s 13th problem for infinitely differentiable functions. Results in Nonlinear Analysis, [S. l.], v. 8, n. 2, p. 72–75, 2025. Disponível em: https://nonlinear-analysis.com/index.php/pub/article/view/634. Acesso em: 14 aug. 2025.