@book{LaSalle1976,
   Author = {LaSalle, Joseph P.},
   Title = {The Stability of Dynamical Systems},
   Series = {CBMS-NSF Regional Conference Series in Applied Mathematics},
   Volume = {25},
   Publisher = {Society for Industrial and Applied Mathematics},
   Address = {Philadelphia},
   Year = {1976},
   Doi = {10.1137/1.9781611970432},
   Note = {\href{https://doi.org/10.1137/1.9781611970432}{doi:\nolinkurl{10.1137/1.9781611970432}}} }

@book{Wiggins2017,
   Author = {Wiggins, Stephen},
   Title = {Ordinary Differential Equations},
   Publisher = {figshare},
   Year = {2017},
   Doi = {10.6084/m9.figshare.5311612.v2},
   Note = {Version 2. \href{https://figshare.com/articles/dataset/Ordinary_Differential_Equations/5311612/2}{doi:\nolinkurl{10.6084/m9.figshare.5311612.v2}}} }

@book{Teschl2012,
   Author = {Teschl, Gerald},
   Title = {Ordinary Differential Equations and Dynamical Systems},
   Series = {Graduate Studies in Mathematics},
   Volume = {140},
   Publisher = {American Mathematical Society},
   Address = {Providence, RI},
   Year = {2012},
   Doi = {10.1090/gsm/140},
   Note = {\href{https://www.mat.univie.ac.at/~gerald/ftp/book-ode/ode.pdf}{doi:\nolinkurl{10.1090/gsm/140}}} }

@book{Khalil2002,
   Author = {Khalil, Hassan K.},
   Title = {Nonlinear Systems},
   Edition = {3},
   Publisher = {Prentice Hall},
   Address = {Upper Saddle River, NJ},
   Year = {2002} }

@book{
AndeMay91,
   Author = {Anderson, R. M. and May, R. M.},
   Title = {Infectious Diseases of Humans: Dynamics and Control},
   Publisher = {Oxford University Press},
   Address = {Oxford},
   Keywords = {SEIR; herd immunity; measles;  whooping cough; epidemiology},
   Year = {1991} }

@book{
GuckHolm83,
   Author = {Guckenheimer, J. and Holmes, P.},
   Title = {Nonlinear Oscillations, Dynamical Systems, and Bifurcations of Vector Fields},
   Publisher = {Springer-Verlag},
   Address = {New York},
   Volume = {42},
   Series = {Applied Mathematical Sciences},
   Keywords = {chaos
Nonlinear oscillations
Differentiable dynamical systems
Bifurcation theory
Vector fields},
   Year = {1983} }