@inproceedings{ins-acmmm98b,
  author	= {Bulterman, Dick C. A.},
  publisher	= {ACM Press},
  URL		= {http://www.cwi.nl/$~$media/publications/uca-mm98.pdf},
  pdf		= {http://www.cwi.nl/$~$media/publications/uca-mm98.pdf},
  booktitle	= {Proceedings of ACM Multimedia},
  title		= {User-Centered Abstractions for Adaptive Hypermedia Presentations},
  month		= nov,
  year		= {1998},
  pages		= {145--150}
}