Rydlewski, Jerzy P. “Forecasting of a Hierarchical Functional Time Series on Example of Macromodel for the Day and Night Air Pollution in Silesia Region — A Critical Overview”. Central European Journal of Economic Modelling and Econometrics, vol. 10, no. 1, Feb. 2018, pp. 53-73, doi:10.24425/cejeme.2018.122190.