1. E-commerce forecast. GroupM Worldwide, Inc. (2020). https://s3.amazonaws.com/media.mediapost.com/uploads/groupmecommerceforecast.pdf. Accessed 12 Apr 2021
2. Evans, M., Rehorst, C.-P., Curtiss, G.: The digital consumer journey best markets for sustained e-commerce growth (2020). https://go.euromonitor.com/rs/805-KOK-719/images/sbEcommerceGrowthForecast-0.4.pdf?mkt_tok=eyJpIjoiTUdNeU1XRTJNR0l6TnpZMyIsInQiOiJ1aFV5NGFsWmQ1Uzd3a1BGaDNaNFhTS2s2M1RFRnA2NWlSd09UMnlOWEpFaWFRTWUwU1VEb2VlNGlwZjVwaUJYckZNNFc3WFJHTkxObGpxeExNSzRvVVNHam5abTQwNmhMTHNnWTV6ZHQ2cmFvMkxQcldjYTdKWjYzbVJWQ2dnWiJ9. Accessed 14 Apr 2021
3. Lecture Notes in Networks and Systems;AD Efremova,2019
4. Lecture Notes in Networks and Systems;EP Kozlova,2020
5. Studies in Systems, Decision and Control;EP Kozlova,2021