9мая -день победы [Электронный ресурс]. — Электрон. текстовые дан. (1 файл : 115 Кб) // Политехник: издание Санкт-Петербургского государственного политехнического университета. – Санкт-Петербург. – 1971. – Загл. с титул. экрана. — Электрон. версия печ. публикации. — Доступ по паролю из сети Интернет (чтение). — Adobe Acrobat Reader. — <URL:http://elib.spbstu.ru/dl/politech/1971/6.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2014 | Quarter 4 | 2 | 0 | 1 | 0 | 3 |
| Year 2015 | Quarter 1 | 8 | 0 | 6 | 0 | 14 |
| Quarter 2 | 4 | 0 | 1 | 0 | 5 | |
| Quarter 3 | 3 | 0 | 1 | 0 | 4 | |
| Quarter 4 | 6 | 0 | 1 | 0 | 7 | |
| Year 2016 | Quarter 1 | 8 | 0 | 8 | 0 | 16 |
| Quarter 2 | 2 | 0 | 8 | 0 | 10 | |
| Quarter 3 | 8 | 0 | 1 | 0 | 9 | |
| Quarter 4 | 5 | 0 | 6 | 0 | 11 | |
| Year 2017 | Quarter 1 | 3 | 0 | 0 | 0 | 3 |
| Quarter 2 | 2 | 0 | 4 | 0 | 6 | |
| Quarter 3 | 6 | 0 | 4 | 0 | 10 | |
| Quarter 4 | 3 | 0 | 6 | 0 | 9 | |
| Year 2018 | Quarter 1 | 1 | 0 | 1 | 0 | 2 |
| Quarter 2 | 3 | 0 | 3 | 0 | 6 | |
| Quarter 3 | 7 | 0 | 5 | 0 | 12 | |
| Quarter 4 | 2 | 0 | 2 | 0 | 4 | |
| Year 2019 | Quarter 1 | 4 | 0 | 5 | 0 | 9 |
| Quarter 2 | 4 | 0 | 2 | 0 | 6 | |
| Quarter 3 | 2 | 0 | 4 | 0 | 6 | |
| Quarter 4 | 1 | 0 | 5 | 0 | 6 | |
| Year 2020 | Quarter 1 | 2 | 0 | 22 | 0 | 24 |
| Quarter 2 | 1 | 0 | 0 | 0 | 1 | |
| Quarter 3 | 7 | 0 | 0 | 0 | 7 | |
| Quarter 4 | 7 | 0 | 7 | 0 | 14 | |
| Year 2021 | Quarter 1 | 5 | 0 | 7 | 0 | 12 |
| Quarter 2 | 2 | 0 | 5 | 0 | 7 | |
| Quarter 3 | 4 | 0 | 1 | 0 | 5 | |
| Quarter 4 | 3 | 0 | 4 | 0 | 7 | |
| Year 2022 | Quarter 1 | 4 | 0 | 5 | 0 | 9 |
| Quarter 2 | 4 | 0 | 6 | 0 | 10 | |
| Quarter 3 | 15 | 0 | 8 | 0 | 23 | |
| Quarter 4 | 20 | 0 | 14 | 0 | 34 | |
| Year 2023 | Quarter 1 | 7 | 0 | 6 | 0 | 13 |
| Quarter 2 | 8 | 0 | 7 | 0 | 15 | |
| Quarter 3 | 4 | 0 | 5 | 0 | 9 | |
| Quarter 4 | 6 | 0 | 2 | 0 | 8 | |
| Total | 183 | 0 | 173 | 0 | 356 | |