· Wollert, R., & Cramer, E. . Sampling Extreme Groups Invalidates Research on the Paraphilias: Implications for DSM-5 and Sex Offender Risk Assessments. Behavioral Sciences and the Law, Behav. Sci. Law 29: 554–565 (2011)
· Waggoner, J., Wollert, R., & Cramer, E. (2008). A respecification of Hanson's updated Static-99 experience table that controls for the effects of age on sexual recidivism among young offenders Law, Probability, and Risk, 7, 305-312.
· Wollert, R., Cramer, E., Waggoner, J., Skelton, A., & Vess, J. Recent research (N=9,305) underscores the importance of using age-stratified actuarial tables in sex offender risk assessments. Sex Abuse November 23, 2010 vol. 22 no. 4 471-490
modified December 16, 2012