Eckley, Idris A., and Guy P. Nason. “LS2W: Implementing the Locally Stationary 2D Wavelet Process Approach in R”. Journal of Statistical Software 43, no. 3 (July 25, 2011): 1–23. Accessed April 26, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v043i03.