In: Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing. International Conference on Acoustics, Speech and Signal Processing (ICASSP-09), April 19-24, Taipei, Taiwan, Province of China, IEEE, 2009.
In: D. Dicheva; R. Mizoguchi; J. Greer (Hrsg.). Semantic Web Technologies for e-Learning. Chapter 8, A Cross-Curriculum Representation for Handling and Searching Dynamic Geometry Competencies, Pages 136-155, The Future of Learning, Vol. 4, ISBN 978-1-60750-062-9, IOS Press, 11/2009.
International Workshop on the Semantic Representation of Spoken Language (SRSL-09), located at 12th Conference of the European Chapter of the Association for Computational Linguistics, March 30, Athens, Greece, EACL, 4/2009.