Crainiceanu, Ciprian M., David Ruppert, and Matthew P. Wand. “Bayesian Analysis for Penalized Spline Regression Using WinBUGS”. Journal of Statistical Software 14, no. 14 (September 29, 2005): 1–24. Accessed August 17, 2022. https://www.jstatsoft.org/index.php/jss/article/view/v014i14.