- https://diver.stanford.edu/what.html
- Monserrat, Toni-Jan Keith Palma, et al. “NoteVideo: facilitating navigation of blackboard-style lecture videos.” Proceedings of the SIGCHI conference on human factors in computing systems. 2013.
- http://people.csail.mit.edu/hishin/projects/visual_transcripts/abstract.html
- https://dspace.mit.edu/handle/1721.1/100619
- https://dspace.mit.edu/handle/1721.1/91836
