1. From sonic Pi to overtone
2. Apple Computer. 2016. Swift Playgrounds. http://www.apple.com/swift/ playgrounds/ . Accessed February 2017. Apple Computer. 2016. Swift Playgrounds. http://www.apple.com/swift/ playgrounds/ . Accessed February 2017.
3. The mental map and memorability in dynamic graphs
4. Kent Beck. 2003. Test-Driven Development: by Example. Addison-Wesley Professional. Kent Beck. 2003. Test-Driven Development: by Example. Addison-Wesley Professional.
5. Zeus: a system for algorithm animation and multi-view editing