1. Abou Elkhir , A. 2002 Perspectives on the Position of I slamic Jurisprudence of the Financial Right of the Author Paper presented at the symposium on the legal protection of intellectual property, S.A. Kamel Centre for Islamic Economics Al-Azhar University Cairo
2. Aherents.com website 2005 Predominant Religion http://www.adherents.com/adh_predom.html
3. Al-bukhari , M. 2011 Sahih al-bukhari Islamweb Hadith Encyclopaedia http://www.islamweb.net/hadith/index.php
4. Aggregate Private R&D Investments in Agriculture: The Role of Incentives, Public Policies, and Institutions;Alfranca;Economic Development and Cultural Change,2003
5. Alghamdy , N. 2005 Protection of Intellectual Property in I slamic Jurisprudence and Its Economic Consequences Paper presented at the third international conference for Islamic Economics Umm al-Qura university Mecca