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Mohammad Rasoul Velayati Assistant Professor Faculty of Mathematics and Computer Najafabad branch Islamic Azad University Email: mvelayat{at}iaun.ac.ir - mvelayat{at}yahoo.com e-office link: http://vs.iaun.ac.ir/m2066 University Blvd. Najafabad, Isfahan Iran. Post code: 8514143131 Phone: +98 (31) 4229-2237 Fax: +98 (31) 4229-1016 |