Formalising tutoring strategy selection in multimedia tutoring systems

@article{Tong1999FormalisingTS,
  title={Formalising tutoring strategy selection in multimedia tutoring systems},
  author={Amelia K. Y. Tong and Marios C. Angelides},
  journal={Information & Software Technology},
  year={1999},
  volume={41},
  pages={67-90}
}