1.
Moyasser Ahmed dr., Ismaeel O. Statistical Concept of Six Sigma & Its Relationship With Processes Improvement Functions. TANRA [Internet]. 2009 Mar. 1 [cited 2026 Jan. 18];31(93):124-43. Available from: https://tanmiyat.uomosul.edu.iq/index.php/tanmiyat/article/view/29593