Yancheng Zhu, Meige Wang. An Enhanced Study Instrument for Distance Education. In Dehuai Zeng, editor, Applied Informatics and Communication - International Conference, ICAIC 2011, Xi'an, China, August 20-21, 2011, Proceedings, Part II. Volume 225 of Communications in Computer and Information Science, pages 608-613, Springer, 2011. [doi]