Manifold-Constrained Data Augmentation via SPD Geometry for Self-Supervised ECG Representation Learning. Journal of Advanced Intelligent Computing and Informatics, [S. l.], v. 1, n. 1, p. 1–15, 2026. Disponível em: https://landing.wrunion.org/ojs/index.php/jaici/article/view/19. Acesso em: 7 oct. 2026.