Mohammad Shojafar, Siamak Barzegar, Farain Aeini, Hassan Rashidi. The Practical Guidelines for Designing User Interface in Virtual Learning Environment. In Hamid R. Arabnia, Azita Bahrami, Ashu M. G. Solo, editors, Proceedings of the 2010 International Conference on E-Learning, E-Business, Enterprise Information Systems, & E-Government, EEE 2010, July 12-15, 2010, Las Vegas Nevada, USA. pages 26-32, CSREA Press, 2010.