Saif M. Hasan, Firas T. Maher and Nagham Q. Kadhim (2019) “Partial purification of topoisomerase IB from serum of diabetic patients and study it’s kinetic properties and molecular weight”, Tikrit Journal of Pure Science, 23(10), pp. 46–50. doi: 10.25130/tjps.v23i10.562.