ActiveMath – a Learning Platform With  Semantic Web Features 
Abstract:
        ActiveMath is an intelligent e-Learning platform that exhibits a
        number of Semantic Web features. Its content knowledge representation
        is a semantic XML dialect for mathematics, semantic search is enabled,
        some of its components work as a web service and, vice versa, it employs
        certain foreign web services, e.g., for diagnostic purposes.
      
Published:
Semantic Web Technologies for e-Learning, 
        
a book edited by D. Dicheva, R. Mizoguchi and J. Greer (eds),
        Volume 4 The Future of Learning, IOS Press, ISBN 978-1-60750-062-9.
         , 2009-11