| CovCorMPer | Robust covariance or correlation matrix from the MPer-ACF | 
| CovCorPer | Covariance or correlation matrix from the Per-ACF | 
| CrossPeriodogram | Cross-periodogram | 
| MCrossPeriodogram | Robust M-cross-periodogram | 
| MPerACF | Robust autocorrelation or autocovariance function estimation from the robust M-periodogram | 
| MPerioReg | Robust M-periodogram | 
| PerACF | Autocorrelation or autocovariance function estimation from the periodogram | 
| PerioReg | Periodogram | 
| plot.robacf | Plot Robust Autocovariance and Robust Autocorrelation Functions |