1. Vazhinskij S.Ye., Sherbak T.I. (2016) Metodologiya ta organizaciya naukovih doslidzhen: posib. [Methodology and organization of scientific research . Sumy: A. S. Makarenka, Sumske DPU, 260 s. [in Ukrainian]
2. Metodologiya naukovih doslidzhen u shemah, tablicyah, prikladah: navch. posibnik dlya studentiv vuziv [Methodology of scientific research in diagrams, tables, examples: teaching. a guide for university students] / G.M. Azarenkova ta in. Pid red. G.M. Azarenkovoyi. Nacionalnij bank Ukrayini. Bankivskij universitet. spravi. Kyiv, 2014. 223 s. [in Ukrainian]
3. Pro naukovo-tehnichnu diyalnist: Zakon Ukrayini vid 26.11.2015 r. № 848 [On scientific and technical activity: Law of Ukraine dated November 26, 2015 No. 848]. Baza danih «Zakonodavstvo Ukrayini» / Kabinet Ministriv Ukrayini. Data onovlennya 18.04.2021. Available at: https://zakon.rada.gov.ua/laws/card/848-19 [in Ukrainian]
4. Kenna R. (2017) A scientists' view of scientometrics: Not everything that counts can be counted. Condensed Matter Physics. 20. No. 1. P. 13803.
5. Qualitative Research: Definition, Types, Methods and Examples. Available at: https://www.questionpro.com/blog/qualitative-research-methods/