Media type: E-Article Title: Lecture Notes in Computer Science: Enhancing the Privacy of e-Learning Systems with Alias and Anonymity Contributor: Yong, Jianming imprint: Springer Berlin Heidelberg, 2008 Published in: Lecture Notes in Computer Science Language: Not determined DOI: 10.1007/978-3-540-92719-8_48 ISSN: 0302-9743; 1611-3349 Origination: Footnote: