DESIDOC, D. Copiers and Copy Printers from Gestetner. DESIDOC Journal of Library & Information Technology, [S. l.], v. 14, n. 2, 2002. DOI: 10.14429/djlit.14.2.3096. Disponível em: https://publications.drdo.gov.in/ojs/index.php/djlit/article/view/3096. Acesso em: 19 sep. 2025.