Elnour، K. A. E. A. A. (2019). The Continuous General Solution of Functional Equation Related to Characteristic of Two by Two Symmetric Matrices. المجلة العربية للنشر العلمي، ع14 ، 219 - 232. مسترجع من http://search.mandumah.com/Record/1435537
Elnour، Khalid Abd Elrazig Awad Alla. "The Continuous General Solution of Functional Equation Related to Characteristic of Two By Two Symmetric Matrices." المجلة العربية للنشر العلمي ع14 (2019): 219 - 232. مسترجع من http://search.mandumah.com/Record/1435537