1. [1] Bootstrap. https://getbootstrap.com/.
2. [2] KeYmaera X: An aXiomatic Tactical Theorem Prover for Hybrid Systems.http://www.ls.cs.cmu.edu/KeYmaeraX/.
3. [3] LeaderLine. https://anseki.github.io/leader-line/.
4. [4] Matworks Simulink. https://www.mathworks.com/products/simulink.html.
5. [5] The Modelica Association. https://www.modelica.org/.