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| BVU | Bonus vetus OLS, BVU |
| BVW | Bonus vetus OLS, BVW |
| DDM | Double Demeaning, DDM |
| EK_Tobit | Eaton and Kortum (2001) Tobit model, EK_Tobit |
| ET_Tobit | Eaton and Tamura (1994) threshold Tobit model, ET_Tobit |
| Fixed_Effects | Fixed_Effects |
| GPML | Gamma Pseudo Maximum Likelihood, GPML |
| Gravity_no_zeros | Gravity dataset without zero trade flows |
| Gravity_zeros | Gravity dataset with zero trade flows |
| NBPML | Negative Binomial Pseudo Maximum Likelihood, NBPML |
| NLS | Nonlinear Least Squares, NLS |
| OLS | OLS |
| PPML | Poisson Pseudo Maximum Likelihood, PPML |
| SILS | Structural Iterated Least Squares, SILS |
| Tetrads | Tetrads |
| Tobit | Left-censored Tobit model with known threshold |