1.
Directional $\mathcal{H}^2$ Compression Algorithm: Optimisations and Application to a Discontinuous Galerkin BEM for the Helmholtz Equation. Commun. Comput. Phys. [Internet]. 2022 May 6 [cited 2025 Dec. 5];31(5):1585-63. Available from: https://www.global-sci.com/index.php/cicp/article/view/7075