1. “Maintaining Knowledge about Temporal Intervals.”;Allen,1985
2. Macintosh Common Lisp Reference;Apple Computer,1993
3. QuickTime Developer's Guide;Apple Computer,1993
4. The Visual Almanac;Apple Multimedia Lab,1989
5. Arndt, Timothy and Shi-Kuo Chang. “Image Sequence Compression by Iconic Indexing.” In: Proceedings of 1989 IEEE Workshop on Visual Languages in Rome, Italy, IEEE Computer Society Press, 177–182, 1989.