| combination_with_repetition | Combination with repetition. |
| estprod_data | 10000 randomly generated variables in panel data format. |
| levinsohn_petrin | Levinsohn-Petrin Estimation of Production Functions |
| olley_pakes | Olley-Pakes Estimation of Production Functions |
| panel_lag | Panel data lag function |
| poly_elements | Number of 'poly' elements. |
| wooldridge | Wooldridge Estimation of Production Functions (Cobb-Douglas) |