1. Afonyushkina, O.I.: Electronic circulation of documents: features, advantages and disadvantages. Educ. Sci. Without Borders Fundamental Appl. Res. 2019(10), 164–168 (2019)
2. Andrianov V.I., Danilova Y.S., Egorova A.L.: Secure electronic document management. Econ. Quality Commun. Syst. 3(13), 58–63 (2019)
3. Diadoc Contour: https://www.diadoc.ru/about (2020). Accessed 09 Feb 2020
4. Directum: https://www.directum.ru/ (2020). Accessed 09 Feb 2020
5. Kuryanov, S.: SED and digital transformation of management (2016)https://docsvision.com/info-centr/blog/cifrovaja_transformazia_upravlenija_i_sed.html. Accessed 07 Feb 2020