| jive.est | The Jackknife Instrumental Variable Estimator (JIVE). | 
| jive.internal | Internal function for the Jackknife Instrumental Variable Estimator (JIVE). | 
| ols.est | The Ordinary Least Squares (OLS) Estimator. | 
| sps.est | Semi-parametric Stein-like (SPS) estimator. | 
| sps.internal | Internal function for Semi-parametric Stein-like (SPS) estimator. | 
| tr | Trace of a matrix. | 
| tsls.est | The Two-Stage Least Squares (TSLS) estimator. |