Kuporov, Iurii Iu. Theoretical aspects of evaluating social-economic efficiency of investments in public services [Электронный ресурс] = Теоретические аспекты оценки социально-экономической эффективности инвестиций в общественные услуги / I.I. Kuporov, T.Yu. Kudryavtseva. — (Finance and investments). — Электрон. текстовые дан. (1 файл : 153 Кб) // Научно-технические ведомости Санкт-Петербургского государственного политехнического университета. Сер. : Экономические науки = St. Petersburg state polytechnical university journal. Economics: научное издание / М-во образования и науки Российской Федерации. – Санкт-Петербург. – 2014. – St. Petersburg state polytechnical university journal. Economics. — Загл. с титул. экрана. — Электронная версия печатной публикации. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Текстовый файл. — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/4972.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2014 | Quarter 4 | 16 | 0 | 14 | 0 | 30 |
| Year 2015 | Quarter 1 | 27 | 0 | 28 | 0 | 55 |
| Quarter 2 | 17 | 0 | 6 | 0 | 23 | |
| Quarter 3 | 11 | 0 | 11 | 0 | 22 | |
| Quarter 4 | 5 | 0 | 9 | 0 | 14 | |
| Year 2016 | Quarter 1 | 6 | 0 | 8 | 0 | 14 |
| Quarter 2 | 9 | 0 | 10 | 0 | 19 | |
| Quarter 3 | 5 | 0 | 2 | 0 | 7 | |
| Quarter 4 | 11 | 0 | 5 | 0 | 16 | |
| Year 2017 | Quarter 1 | 8 | 0 | 3 | 0 | 11 |
| Quarter 2 | 6 | 0 | 6 | 0 | 12 | |
| Quarter 3 | 12 | 0 | 3 | 0 | 15 | |
| Quarter 4 | 10 | 0 | 4 | 0 | 14 | |
| Year 2018 | Quarter 1 | 9 | 0 | 8 | 0 | 17 |
| Quarter 2 | 7 | 0 | 6 | 0 | 13 | |
| Quarter 3 | 12 | 0 | 8 | 0 | 20 | |
| Quarter 4 | 8 | 0 | 8 | 0 | 16 | |
| Year 2019 | Quarter 1 | 9 | 0 | 6 | 0 | 15 |
| Quarter 2 | 4 | 0 | 1 | 0 | 5 | |
| Quarter 3 | 6 | 0 | 10 | 0 | 16 | |
| Quarter 4 | 2 | 0 | 5 | 0 | 7 | |
| Year 2020 | Quarter 1 | 9 | 0 | 8 | 0 | 17 |
| Quarter 2 | 9 | 0 | 0 | 0 | 9 | |
| Quarter 3 | 11 | 0 | 0 | 0 | 11 | |
| Quarter 4 | 5 | 0 | 13 | 0 | 18 | |
| Year 2021 | Quarter 1 | 15 | 0 | 5 | 0 | 20 |
| Quarter 2 | 12 | 0 | 8 | 0 | 20 | |
| Quarter 3 | 7 | 0 | 9 | 0 | 16 | |
| Quarter 4 | 9 | 0 | 8 | 0 | 17 | |
| Year 2022 | Quarter 1 | 12 | 0 | 10 | 0 | 22 |
| Quarter 2 | 0 | 0 | 15 | 0 | 15 | |
| Quarter 3 | 11 | 0 | 0 | 0 | 11 | |
| Quarter 4 | 13 | 0 | 5 | 0 | 18 | |
| Year 2023 | Quarter 1 | 5 | 0 | 7 | 0 | 12 |
| Quarter 2 | 7 | 0 | 6 | 0 | 13 | |
| Quarter 3 | 4 | 0 | 4 | 0 | 8 | |
| Quarter 4 | 8 | 0 | 7 | 0 | 15 | |
| Year 2024 | Quarter 1 | 2 | 0 | 2 | 0 | 4 |
| Quarter 2 | 10 | 0 | 12 | 0 | 22 | |
| Quarter 3 | 10 | 0 | 9 | 0 | 19 | |
| Quarter 4 | 1 | 0 | 1 | 0 | 2 | |
| Total | 360 | 0 | 290 | 0 | 650 | |