1. The Classification and Distinction of the Yemeni Governorates according to the Sources of Individual Income using The two Styles of Cluster Analysis and Discriminatory Analysis;Al-Miklafi;Research and Publication Office, Al-Nasser University, Sanaa, Yemen,2012
2. Technology, e-learning and Distance Education
3. Evaluation and Implementation of Distance Learning;Belager
4. Discussion of: Brownian distance covariance