1. A new look at the statistical model identification
2. The origin of bursts and heavy tails in human dynamics
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4. Congress (2003), “Report of Investigation of Enron Corporation and Related Entities Regarding Federal Tax and Compensation Issues, and Policy Recommendations, Appendix D VII Materials Relating to Pre-Bankruptcy Bonuses,” available at http://www.gpo.gov/fdsys/pkg/GPO-CPRT-JCS-3-03/content-detail.html