Fahrmeir, Ludwig, and Thomas Kneib. "Introduction: Scope of the Book and Applications." Bayesian Smoothing and Regression for Longitudinal, Spatial and Event History Data. : Oxford University Press, 2011-04-28. Oxford Scholarship Online. 2011-09-22. Date Accessed 20 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199533022.001.0001/acprof-9780199533022-chapter-1>.
Fahrmeir, L., & Kneib, T.(2011-04-28). Introduction: Scope of the Book and Applications. In Bayesian Smoothing and Regression for Longitudinal, Spatial and Event History Data. : Oxford University Press. Retrieved 20 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199533022.001.0001/acprof-9780199533022-chapter-1.
Fahrmeir, Ludwig, and Thomas Kneib. "Introduction: Scope of the Book and Applications." In Bayesian Smoothing and Regression for Longitudinal, Spatial and Event History Data. : Oxford University Press, 2011-04-28. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199533022.001.0001/acprof-9780199533022-chapter-1.
Fahrmeir L, Kneib T. Introduction: Scope of the Book and Applications. In: Fahrmeir L, Kneib T. Bayesian Smoothing and Regression for Longitudinal, Spatial and Event History Data. Oxford University Press; 2011. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199533022.001.0001/acprof-9780199533022-chapter-1. Accessed May 20, 2013.