I. A. KHAN; M. USMAN; M. SHAFI; K. GHANI; N. MINALLAH. Towards an Efficient Urdu Keyboard Layout. Sindh University Research Journal - SURJ (Science Series), [S. l.], v. 47, n. 2, 2015. Disponível em: https://sujo.usindh.edu.pk/index.php/SURJ/article/view/5145. Acesso em: 4 apr. 2026.