tests to accommodate hidden dependence and non-stationarities involving heteroskedasticity, thereby uncoupling these tests … heteroskedasticity in the series. Related extensions are provided for testing cross-correlation at various lags in bivariate time series …

estimation, that incorporates heteroskedasticity in a natural way and does not use a generalized inverse. A Monte Carlo study … examines the performance of the statistic for different heteroskedasticity-robust variance estimators and different skedastic … empirical power, how one corrects for heteroskedasticity matters. We also compare its performance with that of the Wald …

robust under cross sectional or time heteroskedasticity and inhomogeneous patterns of serial correlation. A Monte Carlo study …