Hyndman, Rob Reconciling forecasts: the hts and thief packages Talk given at eRum, Poznan, Poland. 13 October 2016 forecasting model;Time Series Data Analysis;Applied Statistics 2016-10-13
    https://bridges.monash.edu/articles/presentation/Reconciling_forecasts_the_hts_and_thief_packages/4015689
10.4225/03/57ff77cc46ba7