St. Petersburg State Polytechnical University journal [Электронный ресурс]. Economics = Научно-технические ведомости Санкт-Петербургского государственного политехнического университета. Экономические науки. № 1-2(163). — Электрон. текстовые дан. (1 файл : 3,88 Мб). — Saint Petersburg: Polytechnical University Publishing House, 2013. — Загл. с титул. экрана. — Электронная версия печатной публикации. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Текстовый документ. — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/3202.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2013 | Quarter 2 | 5 | 0 | 4 | 0 | 9 |
| Quarter 3 | 20 | 0 | 6 | 0 | 26 | |
| Quarter 4 | 14 | 0 | 5 | 0 | 19 | |
| Year 2014 | Quarter 1 | 26 | 0 | 10 | 0 | 36 |
| Quarter 2 | 28 | 0 | 14 | 0 | 42 | |
| Quarter 3 | 29 | 0 | 8 | 0 | 37 | |
| Quarter 4 | 27 | 0 | 18 | 0 | 45 | |
| Year 2015 | Quarter 1 | 14 | 0 | 8 | 0 | 22 |
| Quarter 2 | 18 | 0 | 7 | 0 | 25 | |
| Quarter 3 | 12 | 0 | 6 | 0 | 18 | |
| Quarter 4 | 37 | 0 | 11 | 0 | 48 | |
| Year 2016 | Quarter 1 | 14 | 0 | 15 | 0 | 29 |
| Quarter 2 | 21 | 0 | 25 | 0 | 46 | |
| Quarter 3 | 13 | 0 | 10 | 0 | 23 | |
| Quarter 4 | 29 | 0 | 30 | 0 | 59 | |
| Year 2017 | Quarter 1 | 17 | 0 | 9 | 0 | 26 |
| Quarter 2 | 16 | 0 | 22 | 0 | 38 | |
| Quarter 3 | 10 | 0 | 7 | 0 | 17 | |
| Quarter 4 | 10 | 0 | 10 | 0 | 20 | |
| Year 2018 | Quarter 1 | 15 | 0 | 15 | 0 | 30 |
| Quarter 2 | 7 | 0 | 12 | 0 | 19 | |
| Quarter 3 | 7 | 0 | 46 | 0 | 53 | |
| Quarter 4 | 15 | 0 | 16 | 0 | 31 | |
| Year 2019 | Quarter 1 | 8 | 0 | 13 | 0 | 21 |
| Quarter 2 | 4 | 0 | 18 | 0 | 22 | |
| Quarter 3 | 6 | 0 | 9 | 0 | 15 | |
| Quarter 4 | 0 | 0 | 5 | 0 | 5 | |
| Year 2020 | Quarter 1 | 8 | 0 | 22 | 0 | 30 |
| Quarter 2 | 11 | 0 | 3 | 0 | 14 | |
| Quarter 3 | 11 | 0 | 0 | 0 | 11 | |
| Quarter 4 | 10 | 0 | 29 | 0 | 39 | |
| Year 2021 | Quarter 1 | 10 | 0 | 10 | 0 | 20 |
| Quarter 2 | 9 | 0 | 6 | 0 | 15 | |
| Quarter 3 | 11 | 0 | 9 | 0 | 20 | |
| Quarter 4 | 1 | 0 | 16 | 0 | 17 | |
| Year 2022 | Quarter 1 | 10 | 0 | 11 | 0 | 21 |
| Quarter 2 | 2 | 0 | 15 | 0 | 17 | |
| Quarter 3 | 4 | 0 | 3 | 0 | 7 | |
| Quarter 4 | 8 | 0 | 13 | 0 | 21 | |
| Year 2023 | Quarter 1 | 5 | 0 | 8 | 0 | 13 |
| Quarter 2 | 4 | 0 | 17 | 0 | 21 | |
| Quarter 3 | 5 | 0 | 5 | 0 | 10 | |
| Quarter 4 | 5 | 0 | 12 | 0 | 17 | |
| Year 2024 | Quarter 1 | 4 | 0 | 13 | 0 | 17 |
| Quarter 2 | 11 | 0 | 26 | 0 | 37 | |
| Quarter 3 | 7 | 0 | 13 | 0 | 20 | |
| Total | 558 | 0 | 590 | 0 | 1,148 | |