Widiger, T. A., Simonson, E., Krueger, R., Livesley, W. J., & Verheul, R. (2006). Personality disorder research agenda for the DSM-V. In T. A. Widiger, E. Simonson, P. J. Sirovatka, & D. A. Regier (Eds.), Dimensional models of personality disorders: Refining the research agenda for DSM-V (pp. 233-256). American Psychiatric Association.

Verheul, R. (2006). Clinical utility of dimensional models of personality pathology. In T. A. Widiger, E. Simonson, P. J. Sirovatka, & D. A. Regier (Eds.), Dimensional models of personality disorders: Refining the research agenda for DSM-V (pp. 203-218). American Psychiatric Association.

Emmelkamp, P. M. G. (2006). Post-traumatic stress disorder: Assessment and follow-up. In M. J. Roy (Ed.), Novel approaches to the diagnosis and treatment of posttraumatic stress disorder (pp. 309-320). IOS Press.