| Fairness | Perceived Fairness of Different Rules for Allocating Seats in Trains and Parking Spaces |
| HealthIns | Health Insurance and Doctor Visits |
| negbin | Panel Estimators for Generalized Linear Models |
| ordinal | Panel Estimators for Generalized Linear Models |
| PatsRD | Dynamic Relation Between Patents and R&D |
| pglm | Panel Estimators for Generalized Linear Models |
| Unions | Unions and Wages |