1. Graham, C.R.: Blended learning systems: Definition, Current Trends, and Future Directions. In: Handbook of Blended Learning: Global Perspectives, Local Designs, pp. 3–21. Pfeiffer, San Francisco (2005)
2. Chan, J.K.Y., Law, K.C.K.: Structured Blended Learning Implementation for an Open Learning Environment. In: Blended Learning, pp. 630–640 (2007)
3. China Ministry of Education: The Outline of Eleventh Five-year Plan of National Education Undertaking Development (2006) (in Chinese)
4. He, K.: New Development of Instructional Technology Base on Blend Learning. Journal of National Academy of Education Administration (9,) 37–79 (2005) (in Chinese)
5. Tan, C., Liu, Y.: Hybrid Learning and Discussion on its Implementation Measures in Distance Education. Modern Distance Education Research 81(3), 36–38 (2006) (in Chinese)