Abo-Saibaa, Athmar J., et al. “Effect of Incubation Period and Vitamin C on in Vitro Sperm Activation in Oligozoospermic Infertile Patients by Using FertiCult Flushing Medium”. Kufa Journal for Nursing Sciences, vol. 3, no. 1, Apr. 2013, pp. 282-9, doi:10.36321/kjns.vi20131.2402.