A Two-Level Simultaneous Orthogonal Matching Pursuit Algorithm for Simultaneous Sparse Approximation Problems. CSIAM Transactions on Applied Mathematics, [S. l.], v. 4, n. 4, p. 758–775, 2023. DOI: 10.4208/csiam-am.SO-2022-0050. Disponível em: https://gsp.tricubic.dev/csiam-am/article/view/7845. Acesso em: 14 mar. 2026.