Подпоркин Виктор Григорьевич, директор Политехнического института (30.05.1942 - 10.05.1943) [Электронный ресурс]. — Электрон. текстовые дан. (1 файл : 131 Кб) // Санкт-Петербургский государственный политехнический университет в XX - начале XXI века: исторические очерки о его руководителях / [Н. П. Гербылева, Л. А. Моторина, И. В. Жуавлева [и др.]; под редакцией Н. П. Гербылевой; Санкт-Петербургский государственный политехнический университет. – Санкт-Петербург, 2005. — Загл. с титул. экрана. — Электрон. версия печ. публикации. — Доступ по паролю из сети Интернет (чтение). — Acrobat Reader 5.0. — <URL:http://elib.spbstu.ru/dl/biog/23.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 1 | 3 | 0 | 4 | 0 | 7 |
| Quarter 2 | 11 | 0 | 8 | 0 | 19 | |
| Quarter 3 | 3 | 0 | 0 | 0 | 3 | |
| Quarter 4 | 6 | 0 | 11 | 0 | 17 | |
| Year 2013 | Quarter 1 | 2 | 0 | 2 | 0 | 4 |
| Quarter 2 | 13 | 0 | 5 | 0 | 18 | |
| Quarter 3 | 19 | 0 | 6 | 0 | 25 | |
| Quarter 4 | 20 | 0 | 8 | 0 | 28 | |
| Year 2014 | Quarter 1 | 15 | 0 | 7 | 0 | 22 |
| Quarter 2 | 32 | 0 | 16 | 0 | 48 | |
| Quarter 3 | 29 | 0 | 15 | 0 | 44 | |
| Quarter 4 | 20 | 0 | 15 | 0 | 35 | |
| Year 2015 | Quarter 1 | 21 | 0 | 14 | 0 | 35 |
| Quarter 2 | 28 | 0 | 7 | 0 | 35 | |
| Quarter 3 | 34 | 0 | 11 | 0 | 45 | |
| Quarter 4 | 45 | 0 | 17 | 0 | 62 | |
| Year 2016 | Quarter 1 | 27 | 0 | 13 | 0 | 40 |
| Quarter 2 | 28 | 0 | 14 | 0 | 42 | |
| Quarter 3 | 24 | 0 | 7 | 0 | 31 | |
| Quarter 4 | 22 | 0 | 5 | 0 | 27 | |
| Year 2017 | Quarter 1 | 24 | 0 | 4 | 0 | 28 |
| Quarter 2 | 15 | 0 | 3 | 0 | 18 | |
| Quarter 3 | 16 | 0 | 5 | 0 | 21 | |
| Quarter 4 | 21 | 0 | 6 | 0 | 27 | |
| Year 2018 | Quarter 1 | 60 | 0 | 8 | 0 | 68 |
| Quarter 2 | 34 | 0 | 1 | 0 | 35 | |
| Quarter 3 | 31 | 0 | 7 | 0 | 38 | |
| Quarter 4 | 50 | 0 | 12 | 0 | 62 | |
| Year 2019 | Quarter 1 | 21 | 0 | 5 | 0 | 26 |
| Quarter 2 | 12 | 0 | 2 | 0 | 14 | |
| Quarter 3 | 15 | 0 | 9 | 0 | 24 | |
| Quarter 4 | 4 | 0 | 4 | 0 | 8 | |
| Year 2020 | Quarter 1 | 10 | 0 | 12 | 0 | 22 |
| Quarter 2 | 7 | 0 | 0 | 0 | 7 | |
| Quarter 3 | 10 | 0 | 0 | 0 | 10 | |
| Quarter 4 | 10 | 0 | 12 | 0 | 22 | |
| Year 2021 | Quarter 1 | 17 | 0 | 3 | 0 | 20 |
| Quarter 2 | 13 | 0 | 7 | 0 | 20 | |
| Quarter 3 | 15 | 0 | 10 | 0 | 25 | |
| Quarter 4 | 7 | 0 | 10 | 0 | 17 | |
| Year 2022 | Quarter 1 | 14 | 0 | 3 | 0 | 17 |
| Quarter 2 | 24 | 0 | 6 | 0 | 30 | |
| Quarter 3 | 28 | 0 | 2 | 0 | 30 | |
| Quarter 4 | 44 | 0 | 4 | 0 | 48 | |
| Year 2023 | Quarter 1 | 27 | 0 | 12 | 0 | 39 |
| Quarter 2 | 14 | 0 | 10 | 0 | 24 | |
| Quarter 3 | 10 | 0 | 7 | 0 | 17 | |
| Quarter 4 | 13 | 0 | 10 | 0 | 23 | |
| Year 2024 | Quarter 1 | 12 | 0 | 12 | 0 | 24 |
| Quarter 2 | 40 | 0 | 37 | 0 | 77 | |
| Quarter 3 | 15 | 0 | 12 | 0 | 27 | |
| Quarter 4 | 30 | 0 | 15 | 0 | 45 | |
| Year 2025 | Quarter 1 | 59 | 0 | 19 | 0 | 78 |
| Quarter 2 | 47 | 0 | 10 | 0 | 57 | |
| Quarter 3 | 4 | 0 | 2 | 0 | 6 | |
| Total | 1,175 | 0 | 466 | 0 | 1,641 | |