@proceedings{DBLP:conf/its/1998,
  editor    = {Barry P. Goettl and
               Henry M. Halff and
               Carol L. Redfield and
               Valerie J. Shute},
  title     = {Intelligent Tutoring Systems, 4th International Conference,
               ITS '98, San Antonio, Texas, USA, August 16-19, 1998, Proceedings},
  booktitle = {Intelligent Tutoring Systems},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {1452},
  year      = {1998},
  isbn      = {3-540-64770-8},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}