1. MA Al-Atram. 1990. Effectiveness of natural language in indexing and retrieving arabic documents [in Arabic](King Abdulaziz City for Science and Technology Project number AR-8-47). Riyadh, Saudi Arabia (1990).
2. MA Al-Khuli. 1982. A dictionary of theoretical linguistics: English-Arabic, Arabic-English. Beirut: Lebanon Library (1982).
3. Imad A Al-Sughaiyer and Ibrahim A Al-Kharashi. 2004. Arabic morphological analysis techniques: A comprehensive survey. Journal of the American Society for Information Science and Technology 55, 3 (2004), 189--213.
4. Hasan M Alserhan and Aladdin S Ayesh. 2006. An application of neural network for extracting Arabic wordroots. WSEAS Transactions on Computers 5, 11 (2006), 2623--2627.
5. Riyad Alshalabi. 2005. Pattern-based stemmer for finding Arabic roots. Information Technology Journal 4, 1 (2005), 38--43.