SANDAL, N.; KUMAR, A. Searching and Analysing Patent Document to Solve R&D Problems. DESIDOC Journal of Library & Information Technology, [S. l.], v. 36, n. 2, 2016. DOI: 10.14429/djlit.36.2.9504. Disponível em: https://publications.drdo.gov.in/ojs/index.php/djlit/article/view/9504. Acesso em: 27 jun. 2025.