1. Britt, B. C. (2011). System-level motivating factors for collaboration on Wikipedia: A longitudinal network analysis (Master’s thesis). Retrieved from ProQuest Dissertations and Theses Database. (AAI 1501175).
2. Britt, B. C. (2013). Evolution and revolution of organizational configurations on Wikipedia: A longitudinal network analysis (Doctoral dissertation). Retrieved from ProQuest Dissertations and Theses Database. (AAI 3604712).
3. Calabrese, E. J., & Baldwin, L. A. (2003). The hormetic dose-response model is more common than the threshold model in toxicology. Toxicology Sciences, 71(2), 246–250.
4. Cox, C. (1987). Threshold dose-response models in toxicology. Biometrics, 43(3), 511–523.
5. Crawley, M. J. (2007). The R Book. West Sussex, England: Wiley.