1. The Chaotic Pendulum;Gitterman,2010
2. Dialogue Concerning the Two Chief World Systems;Galilei,1967
3. Dialogues Concerning Two New Sciences;Galilei,1914
4. Galileo’s experiments with pendulums: Then and now;Palmieri;PhilSci Archive,2007
5. The Pendulum: A Case Study in Physics;Baker,2008