Journal of Statistical Software: 2015, vol: 64, issue: 10
1)- Nello Blaser, Luisa Salazar Vizcaya, Janne Estill, Cindy Zahnd, Bindu Kalesan, Matthias Egger, Thomas Gsponer, Olivia Keiser. gems: An R Package for Simulating from Disease Progression Models.Journal of statistical software. 2015, 64 (10): 1-22