Gabadinho, Alexis, Gilbert Ritschard, Nicolas S Müller, and Matthias Studer. “Analyzing and Visualizing State Sequences in R With TraMineR”. Journal of Statistical Software 40, no. 4 (April 7, 2011): 1–37. Accessed May 26, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v040i04.