| Fairness | Perveived Fairness of 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 | 
| PatentsRD | Patents, R&d and Technological Spillovers for a Panel of Firms | 
| PatentsRDUS | Dynamic Relation Between Patents and R&d | 
| pglm | Panel Estimators for Generalized Linear Models | 
| UnionWage | Unionism and Wage Rate Determination |