Al-Maeny, S. A. L., 		Mohmmad, A. M., 		Majeed, I.y., AND 		Ali, A.H ..
" Determination of Optimum Cultural Conditions for the  Production of  Cytosine Deaminase From  Escherichia coli" <em>Ibn AL- Haitham Journal For Pure and Applied Sciences</em> [Online], Volume 22 Number 3 (9 August 2017)