@unpublished{enescu2010,
  title={Math 4444/6444 {P}olynomials 2, {L}ecture {N}otes, {L}ecture 9},
  url={https://math.gsu.edu/fenescu/fall2010/lec9-polyn-2010.pdf},
  note={\url{https://math.gsu.edu/fenescu/fall2010/lec9-polyn-2010.pdf}},
  year={2010},
  author={Florian Enescu}
}

@book{marden1966,
  title={Geometry of Polynomials},
  author={Marden, Morris},
  isbn={9780821873847},
  series={American Mathematical Society Mathematical Surveys},
  year={1966},
  publisher={American Mathematical Society}
}