References
- Brown, T., Johnson, B. (2023). 3-103-PullBackCars-ModelingScenario. SIMIODE, QUBES Educational Resources. https://qubeshub.org/community/groups/simiode/publications?id=3664.
- Francis, B. (1957). Keyless device for winding up clockwork mechanism. U.S. Patent 2,795,294.
- Johnson, B. (2021). 3-099-S-PullBack-ModelingScenario. SIMIODE, QUBES Educational Resources. https://qubeshub.org/community/groups/simiode/publications?id=3007.
- Johnson, B. (2023). A pull-back car. PNG file.
- Wikipedia article: Pullback motor. https://en.wikipedia.org/wiki/Pullback_motor. Accessed June 19, 2023.