Тутыгин, Владимир Семенович. Основы автоматизации физического эксперимента [Электронный ресурс]: лабораторный практикум / В. С. Тутыгин; Санкт-Петербургский государственный политехнический университет. — Электрон. текстовые дан. (1 файл : 1,06 Мб). — СПб., 2008. — Загл. с титул. экрана. — Электрон. версия печ. публикации. — Свободный доступ из сети Интернет (чтение, печать, копирование). — текстовый файл. — Adobe Acrobat Reader 6.0. — <URL:http://elib.spbstu.ru/dl/1674.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 1 | 3 | 0 | 2 | 0 | 5 |
| Quarter 2 | 4 | 0 | 8 | 0 | 12 | |
| Quarter 3 | 2 | 0 | 4 | 0 | 6 | |
| Quarter 4 | 6 | 0 | 16 | 0 | 22 | |
| Year 2013 | Quarter 1 | 3 | 0 | 12 | 0 | 15 |
| Quarter 2 | 19 | 0 | 3 | 0 | 22 | |
| Quarter 3 | 18 | 0 | 4 | 0 | 22 | |
| Quarter 4 | 14 | 0 | 13 | 0 | 27 | |
| Year 2014 | Quarter 1 | 12 | 0 | 7 | 0 | 19 |
| Quarter 2 | 18 | 1 | 17 | 0 | 36 | |
| Quarter 3 | 25 | 0 | 34 | 0 | 59 | |
| Quarter 4 | 25 | 0 | 28 | 0 | 53 | |
| Year 2015 | Quarter 1 | 24 | 0 | 15 | 0 | 39 |
| Quarter 2 | 36 | 0 | 23 | 0 | 59 | |
| Quarter 3 | 36 | 0 | 8 | 0 | 44 | |
| Quarter 4 | 27 | 0 | 16 | 0 | 43 | |
| Year 2016 | Quarter 1 | 25 | 0 | 11 | 0 | 36 |
| Quarter 2 | 33 | 0 | 14 | 0 | 47 | |
| Quarter 3 | 27 | 0 | 10 | 0 | 37 | |
| Quarter 4 | 51 | 0 | 9 | 0 | 60 | |
| Year 2017 | Quarter 1 | 25 | 0 | 8 | 0 | 33 |
| Quarter 2 | 11 | 0 | 15 | 0 | 26 | |
| Quarter 3 | 16 | 0 | 16 | 0 | 32 | |
| Quarter 4 | 23 | 0 | 19 | 0 | 42 | |
| Year 2018 | Quarter 1 | 16 | 0 | 85 | 0 | 101 |
| Quarter 2 | 8 | 0 | 106 | 0 | 114 | |
| Quarter 3 | 7 | 0 | 93 | 0 | 100 | |
| Quarter 4 | 12 | 0 | 88 | 0 | 100 | |
| Year 2019 | Quarter 1 | 10 | 0 | 70 | 0 | 80 |
| Quarter 2 | 13 | 0 | 75 | 0 | 88 | |
| Quarter 3 | 9 | 0 | 47 | 0 | 56 | |
| Quarter 4 | 3 | 0 | 59 | 0 | 62 | |
| Year 2020 | Quarter 1 | 6 | 0 | 55 | 0 | 61 |
| Quarter 2 | 14 | 0 | 2 | 0 | 16 | |
| Quarter 3 | 13 | 0 | 0 | 0 | 13 | |
| Quarter 4 | 13 | 0 | 15 | 0 | 28 | |
| Year 2021 | Quarter 1 | 6 | 0 | 25 | 0 | 31 |
| Quarter 2 | 7 | 0 | 32 | 0 | 39 | |
| Quarter 3 | 10 | 0 | 37 | 0 | 47 | |
| Quarter 4 | 7 | 0 | 42 | 0 | 49 | |
| Year 2022 | Quarter 1 | 4 | 0 | 38 | 0 | 42 |
| Quarter 2 | 7 | 0 | 29 | 0 | 36 | |
| Quarter 3 | 8 | 0 | 25 | 0 | 33 | |
| Quarter 4 | 12 | 0 | 35 | 0 | 47 | |
| Year 2023 | Quarter 1 | 13 | 0 | 75 | 0 | 88 |
| Quarter 2 | 9 | 0 | 31 | 0 | 40 | |
| Quarter 3 | 8 | 0 | 31 | 0 | 39 | |
| Quarter 4 | 7 | 0 | 38 | 0 | 45 | |
| Year 2024 | Quarter 1 | 5 | 0 | 43 | 0 | 48 |
| Quarter 2 | 9 | 0 | 53 | 0 | 62 | |
| Quarter 3 | 12 | 0 | 41 | 0 | 53 | |
| Quarter 4 | 21 | 0 | 59 | 0 | 80 | |
| Year 2025 | Quarter 1 | 25 | 0 | 53 | 0 | 78 |
| Quarter 2 | 24 | 0 | 44 | 0 | 68 | |
| Quarter 3 | 0 | 0 | 1 | 0 | 1 | |
| Total | 801 | 1 | 1,739 | 0 | 2,541 | |