Посников Александр Сергеевич, директор Политехнического института (28.03.1907 - 09.10.1907) (10.10.1908 - 01.08.1911) [Электронный ресурс]. — Электрон. текстовые дан. (1 файл : 151 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/2.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 1 | 3 | 0 | 4 | 0 | 7 |
| Quarter 2 | 12 | 0 | 7 | 0 | 19 | |
| Quarter 3 | 2 | 0 | 2 | 0 | 4 | |
| Quarter 4 | 8 | 0 | 11 | 0 | 19 | |
| Year 2013 | Quarter 1 | 4 | 0 | 1 | 0 | 5 |
| Quarter 2 | 10 | 0 | 7 | 0 | 17 | |
| Quarter 3 | 7 | 0 | 7 | 0 | 14 | |
| Quarter 4 | 15 | 0 | 6 | 0 | 21 | |
| Year 2014 | Quarter 1 | 12 | 0 | 13 | 0 | 25 |
| Quarter 2 | 25 | 0 | 13 | 0 | 38 | |
| Quarter 3 | 21 | 0 | 10 | 0 | 31 | |
| Quarter 4 | 21 | 0 | 13 | 0 | 34 | |
| Year 2015 | Quarter 1 | 28 | 0 | 8 | 0 | 36 |
| Quarter 2 | 26 | 0 | 10 | 0 | 36 | |
| Quarter 3 | 30 | 0 | 14 | 0 | 44 | |
| Quarter 4 | 28 | 0 | 8 | 0 | 36 | |
| Year 2016 | Quarter 1 | 25 | 0 | 15 | 0 | 40 |
| Quarter 2 | 22 | 0 | 13 | 0 | 35 | |
| Quarter 3 | 17 | 0 | 12 | 0 | 29 | |
| Quarter 4 | 15 | 0 | 6 | 0 | 21 | |
| Year 2017 | Quarter 1 | 16 | 0 | 2 | 0 | 18 |
| Quarter 2 | 22 | 0 | 5 | 0 | 27 | |
| Quarter 3 | 17 | 0 | 8 | 0 | 25 | |
| Quarter 4 | 23 | 0 | 4 | 0 | 27 | |
| Year 2018 | Quarter 1 | 51 | 0 | 9 | 0 | 60 |
| Quarter 2 | 40 | 0 | 4 | 0 | 44 | |
| Quarter 3 | 30 | 0 | 10 | 0 | 40 | |
| Quarter 4 | 41 | 0 | 21 | 0 | 62 | |
| Year 2019 | Quarter 1 | 25 | 0 | 8 | 0 | 33 |
| Quarter 2 | 22 | 0 | 1 | 0 | 23 | |
| Quarter 3 | 14 | 0 | 6 | 0 | 20 | |
| Quarter 4 | 8 | 0 | 2 | 0 | 10 | |
| Year 2020 | Quarter 1 | 16 | 0 | 7 | 0 | 23 |
| Quarter 2 | 13 | 0 | 0 | 0 | 13 | |
| Quarter 3 | 16 | 0 | 0 | 0 | 16 | |
| Quarter 4 | 14 | 0 | 9 | 0 | 23 | |
| Year 2021 | Quarter 1 | 19 | 0 | 3 | 0 | 22 |
| Quarter 2 | 22 | 0 | 6 | 0 | 28 | |
| Quarter 3 | 33 | 0 | 9 | 0 | 42 | |
| Quarter 4 | 13 | 0 | 6 | 0 | 19 | |
| Year 2022 | Quarter 1 | 22 | 0 | 5 | 0 | 27 |
| Quarter 2 | 17 | 0 | 4 | 0 | 21 | |
| Quarter 3 | 28 | 0 | 3 | 0 | 31 | |
| Quarter 4 | 31 | 0 | 2 | 0 | 33 | |
| Year 2023 | Quarter 1 | 14 | 0 | 7 | 0 | 21 |
| Quarter 2 | 16 | 0 | 8 | 0 | 24 | |
| Quarter 3 | 22 | 0 | 4 | 0 | 26 | |
| Quarter 4 | 13 | 0 | 13 | 0 | 26 | |
| Year 2024 | Quarter 1 | 11 | 0 | 11 | 0 | 22 |
| Quarter 2 | 24 | 0 | 23 | 0 | 47 | |
| Quarter 3 | 21 | 0 | 12 | 0 | 33 | |
| Quarter 4 | 33 | 0 | 12 | 0 | 45 | |
| Year 2025 | Quarter 1 | 43 | 0 | 30 | 0 | 73 |
| Quarter 2 | 41 | 0 | 15 | 0 | 56 | |
| Quarter 3 | 1 | 0 | 0 | 0 | 1 | |
| Total | 1,123 | 0 | 449 | 0 | 1,572 | |