Barrott, I, Barrett, J, Keogh, R, Sweeting, M and Stevens, D (2022). Landmarking: Analysis using Landmark Models. [Data Collection]. Comprehensive R Archive Network. https://cran.r-project.org/package=Landmarking

Keogh, R (2018). ruthkeogh/landmark_CF. [Data Collection]. Github. https://github.com/ruthkeogh/landmark_CF