RAO, K. N.; TALWAR, V. Content-Based Document Recommender System for Aerospace Grey Literature: System Design. DESIDOC Journal of Library & Information Technology, [S. l.], v. 31, n. 3, 2011. DOI: 10.14429/djlit.31.3.1046. Disponível em: https://publications.drdo.gov.in/ojs/index.php/djlit/article/view/1046. Acesso em: 27 jun. 2025.