Abd AL Hussein Jalil AlGhaliby, Raad Ebraheem Neamah. “Production Function Analysis of The New Kufa Cement Plant For The Period (2004-2020)”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 14, Sept. 2021, pp. 3278-96, doi:10.17762/turcomat.v12i14.10899.