sources.bib

@book{squeeze,
  author = {Larson, Ron and Edwards, Bruce H.},
  edition = {5},
  publisher = {Cengage},
  title = {Calculus of a single variable: Early transcendental functions},
  year = {2019}
}

@book{hamper,
  author = {Hamper, Chris},
  edition = {2},
  publisher = {Pearson Education Limited},
  title = {Higher Level Physics},
  year = {2014}
}

@book{pendulum,
  author = {Baker, Gregory L. and Blackburn, James A.},
  publisher = {Oxford University Press},
  title = {The pendulum: a case study in physics},
  year = {2005}
}

@book{ode,
  author = {Nagy, Gabriel},
  month = {01},
  publisher = {Michigan State University},
  title = {Ordinary Differential Equations},
  year = {2021},
  urldate = {2021-09-10},
  url = {https://users.math.msu.edu/users/gnagy/teaching/ode.pdf}
}

@book{firstcourse,
  author = {Zill, Dennis G.},
  publisher = {Cengage Learning},
  title = {A first course in differential equations with modeling applications},
  year = {2018}
}

@misc{mse,
  author = {Shenoy, Gautam},
  title = {Why is a linear combination of solutions also a solution?},
  url = {https://math.stackexchange.com/q/246646},
  urldate = {2021-09-15},
  year = {2012},
  organization = {Mathematics StackExchange}
}

@misc{paul,
  author = {Dawkins, Paul},
  title = {Differential Equations: Complex Roots},
  url = {https://tutorial.math.lamar.edu/classes/de/ComplexRoots.aspx},
  urldate = {2021-09-18},
  year = {2018},
  organization = {Lamar University Mathematics Tutorials}
}

@misc{wolfram,
  author = {Weisstein, Eric W.},
  title = {Attractor},
  url = {https://mathworld.wolfram.com/Attractor.html},
  urldate = {2021-09-18},
  year = {2021},
  organization = {MathWorld from Wolfram}
}

@misc{superposition,
  author = {Rotz, Kevin},
  publisher = {Purdue University},
  title = {MA 222: Proof of the Principle of Superposition},
  url = {https://www.math.purdue.edu/~krotz/teaching/principle-of-superposition.pdf},
  urldate = {2021-09-19},
  year = {2013}
}

@article{double,
  author = {Levien, R. B. and Tan, S. M.},
  month = {11},
  pages = {1038-1044},
  title = {Double pendulum: An experiment in chaos},
  doi = {10.1119/1.17335},
  volume = {61},
  year = {1993},
  journal = {American Journal of Physics}
}

@article{damped,
  author = {Quiroga, Gonzalo D. and Ospina-Henao, Paolo A.},
  title = {Dynamics of damped oscillations: physical pendulum},
  doi = {10.1088/1361-6404/aa8961},
  url = {https://repository.usta.edu.co/bitstream/handle/11634/17053/122.pdf},
  urldate = {2021-09-19},
  year = {2017},
  journal = {IOP Science}
}

@misc{kitchen,
  author = {Kitchins, John},
  title = {Phase portraits of a system of ODEs},
  url = {https://kitchingroup.cheme.cmu.edu/blog/2013/02/21/Phase-portraits-of-a-system-of-ODEs/},
  year = {2013},
  urldate = {2021-09-19},
  organization = {The Kitchin Research Group}
}