TY - JOUR TI - An Improved Heteroskedasticity and Autocorrelation Consistent Covariance Matrix Estimator AU - Donald W. K. Andrews AU - J. Christopher Monahan JO - Econometrica PY - 1992 VL - 60 IS - 4 DO - 10.2307/2951574 UR - https://doi.org/10.2307/2951574 ER -