Савинская, Д. Н., Л. О. Великанова, Л. К. Дунская, and М. И. Попова. “Pre-Forecast Time Series Analysis With Identification of Trend-Seasonal Components by Chetverikov Method Using Ms Excel Means”. Modern Economics: Problems and Solutions, Vol. 10, Nov. 2020, pp. 18-25, doi:10.17308/meps.2020.10/2445.