Бабко, Леонид Васильевич. Компьютерное управление техническими системами [Электронный ресурс]: учебное пособие / Л. В. Бабко, Р. П. Строганов, В. С. Королев, В. Д. Ярмийчук; Санкт-Петербургский государственный политехнический университет. — Электрон. дан. (1 файл : 1,41 Мб). — СПб., 2011. — Загл. с титул. экрана. — Доступ по паролю из сети Интернет (чтение, печать, копирование). — Adobe Acrobat Reader 6.0. — <URL:http://elib.spbstu.ru/dl/2113.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 4 | 0 | 0 | 2 | 0 | 2 |
| Year 2013 | Quarter 1 | 0 | 0 | 2 | 0 | 2 |
| Quarter 2 | 0 | 0 | 8 | 0 | 8 | |
| Quarter 3 | 0 | 0 | 1 | 0 | 1 | |
| Quarter 4 | 0 | 0 | 4 | 0 | 4 | |
| Year 2014 | Quarter 1 | 0 | 0 | 7 | 0 | 7 |
| Quarter 2 | 0 | 0 | 5 | 0 | 5 | |
| Quarter 3 | 0 | 0 | 7 | 0 | 7 | |
| Quarter 4 | 0 | 0 | 14 | 0 | 14 | |
| Year 2015 | Quarter 1 | 0 | 0 | 21 | 0 | 21 |
| Quarter 2 | 0 | 0 | 13 | 0 | 13 | |
| Quarter 3 | 0 | 0 | 76 | 0 | 76 | |
| Quarter 4 | 0 | 0 | 18 | 0 | 18 | |
| Year 2016 | Quarter 1 | 0 | 0 | 21 | 0 | 21 |
| Quarter 2 | 0 | 0 | 6 | 0 | 6 | |
| Quarter 3 | 0 | 0 | 2 | 0 | 2 | |
| Quarter 4 | 0 | 0 | 16 | 0 | 16 | |
| Year 2017 | Quarter 1 | 0 | 0 | 5 | 0 | 5 |
| Quarter 2 | 0 | 0 | 4 | 0 | 4 | |
| Quarter 3 | 0 | 0 | 9 | 0 | 9 | |
| Quarter 4 | 0 | 0 | 8 | 0 | 8 | |
| Year 2018 | Quarter 1 | 0 | 0 | 16 | 0 | 16 |
| Quarter 2 | 0 | 0 | 40 | 0 | 40 | |
| Quarter 3 | 0 | 0 | 32 | 0 | 32 | |
| Quarter 4 | 0 | 0 | 31 | 0 | 31 | |
| Year 2019 | Quarter 1 | 0 | 0 | 37 | 0 | 37 |
| Quarter 2 | 0 | 0 | 21 | 0 | 21 | |
| Quarter 3 | 0 | 0 | 10 | 0 | 10 | |
| Quarter 4 | 0 | 0 | 37 | 0 | 37 | |
| Year 2020 | Quarter 1 | 0 | 0 | 43 | 0 | 43 |
| Quarter 2 | 0 | 0 | 1 | 0 | 1 | |
| Quarter 3 | 0 | 0 | 4 | 0 | 4 | |
| Quarter 4 | 0 | 0 | 31 | 0 | 31 | |
| Year 2021 | Quarter 1 | 0 | 0 | 32 | 0 | 32 |
| Quarter 2 | 0 | 0 | 30 | 0 | 30 | |
| Quarter 3 | 0 | 0 | 22 | 0 | 22 | |
| Quarter 4 | 2 | 0 | 31 | 0 | 33 | |
| Year 2022 | Quarter 1 | 7 | 0 | 11 | 0 | 18 |
| Quarter 2 | 1 | 0 | 8 | 0 | 9 | |
| Quarter 3 | 8 | 0 | 8 | 0 | 16 | |
| Quarter 4 | 11 | 0 | 4 | 0 | 15 | |
| Year 2023 | Quarter 1 | 5 | 0 | 5 | 0 | 10 |
| Quarter 2 | 4 | 0 | 11 | 0 | 15 | |
| Quarter 3 | 5 | 0 | 17 | 0 | 22 | |
| Quarter 4 | 10 | 0 | 18 | 0 | 28 | |
| Year 2024 | Quarter 1 | 19 | 0 | 31 | 0 | 50 |
| Quarter 2 | 22 | 0 | 74 | 0 | 96 | |
| Quarter 3 | 8 | 0 | 26 | 0 | 34 | |
| Quarter 4 | 6 | 0 | 10 | 0 | 16 | |
| Total | 108 | 0 | 890 | 0 | 998 | |