LIU, H.; YU, H.; DENG, Z.-H. Multi-Document Summarization Based on Two-Level Sparse Representation Model. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 29, n. 1, 2015. DOI: 10.1609/aaai.v29i1.9161. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/9161. Acesso em: 4 may. 2024.