Muggeo, Vito M. R. “Analyzing Temperature Effects on Mortality Within the R Environment: The Constrained Segmented Distributed Lag Parameterization”. Journal of Statistical Software 32, no. 12 (January 13, 2010): 1–17. Accessed May 3, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v032i12.