1. VAK journals have been divided into quartiles (Q1, Q2, and Q3). https://sibac.info/blog/zhurnaly-vak-razdelili-na-kvartili-k1-k2-k3.
2. Mokhnacheva, Yu.V., Classification of publications by document types in Web of Science and Scopus: Similarities, differences and their value in the analysis of publication activity, Upr. Naukoi: Teoriya Prakt., 2022, vol. 4, no. 3, pp. 154–170. https://doi.org/10.19181/smtp.2022.4.3.11
3. United interdepartmental information-statistical system (UIISS). https://www.fedstat.ru/indicators/.
4. United Federal Automated Information System about Movie Screenings in Cinema. https://ekinobilet.fond-kino.ru/.
5. Information portal for cinema professionals ProfiCinema. https://www.proficinema.com/questions-problems/articles/detail.php?ID=347703.