Soetaert, Karline, Thomas Petzoldt, and R. Woodrow Setzer. “Solving Differential Equations in R: Package DeSolve”. Journal of Statistical Software 33, no. 9 (February 23, 2010): 1–25. Accessed April 19, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v033i09.