Directional $\mathcal{H}^2$ Compression Algorithm: Optimisations and Application to a Discontinuous Galerkin BEM for the Helmholtz Equation. Communications in Computational Physics, [S. l.], v. 31, n. 5, p. 1585–1635, 2022. DOI: 10.4208/cicp.OA-2021-0241. Disponível em: https://www.global-sci.com/index.php/cicp/article/view/7075. Acesso em: 5 dec. 2025.