Электроэнергетика. Моделирование параметров и процессов высоковольтного электрооборудования [Электронный ресурс]: практикум / Ю.Н. Бочаров, С.И. Кривошеев, А.П. Ненашев и др.; Санкт-Петербургский государственный политехнический университет. — Электрон. текстовые дан. (1 файл : 3,32 Мб). — СПб., 2012. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение). — Текстовый документ. — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2557.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 4 | 0 | 0 | 20 | 0 | 20 |
| Year 2013 | Quarter 1 | 3 | 0 | 14 | 0 | 17 |
| Quarter 2 | 32 | 0 | 21 | 0 | 53 | |
| Quarter 3 | 18 | 0 | 3 | 0 | 21 | |
| Quarter 4 | 9 | 0 | 4 | 0 | 13 | |
| Year 2014 | Quarter 1 | 7 | 0 | 5 | 0 | 12 |
| Quarter 2 | 15 | 0 | 4 | 0 | 19 | |
| Quarter 3 | 10 | 0 | 4 | 0 | 14 | |
| Quarter 4 | 15 | 0 | 24 | 0 | 39 | |
| Year 2015 | Quarter 1 | 11 | 0 | 16 | 0 | 27 |
| Quarter 2 | 32 | 0 | 14 | 0 | 46 | |
| Quarter 3 | 9 | 0 | 5 | 0 | 14 | |
| Quarter 4 | 13 | 0 | 7 | 0 | 20 | |
| Year 2016 | Quarter 1 | 8 | 0 | 9 | 0 | 17 |
| Quarter 2 | 8 | 0 | 4 | 0 | 12 | |
| Quarter 3 | 8 | 0 | 5 | 0 | 13 | |
| Quarter 4 | 14 | 0 | 10 | 0 | 24 | |
| Year 2017 | Quarter 1 | 14 | 0 | 8 | 0 | 22 |
| Quarter 2 | 15 | 0 | 13 | 0 | 28 | |
| Quarter 3 | 8 | 0 | 15 | 0 | 23 | |
| Quarter 4 | 17 | 0 | 22 | 0 | 39 | |
| Year 2018 | Quarter 1 | 4 | 0 | 14 | 0 | 18 |
| Quarter 2 | 6 | 0 | 20 | 0 | 26 | |
| Quarter 3 | 14 | 0 | 28 | 0 | 42 | |
| Quarter 4 | 10 | 0 | 30 | 0 | 40 | |
| Year 2019 | Quarter 1 | 14 | 0 | 19 | 0 | 33 |
| Quarter 2 | 17 | 1 | 44 | 0 | 62 | |
| Quarter 3 | 5 | 0 | 34 | 0 | 39 | |
| Quarter 4 | 10 | 0 | 80 | 0 | 90 | |
| Year 2020 | Quarter 1 | 11 | 0 | 44 | 0 | 55 |
| Quarter 2 | 12 | 0 | 2 | 0 | 14 | |
| Quarter 3 | 9 | 0 | 0 | 0 | 9 | |
| Quarter 4 | 7 | 0 | 12 | 0 | 19 | |
| Year 2021 | Quarter 1 | 3 | 0 | 25 | 0 | 28 |
| Quarter 2 | 0 | 0 | 60 | 0 | 60 | |
| Quarter 3 | 11 | 0 | 68 | 0 | 79 | |
| Quarter 4 | 9 | 0 | 69 | 0 | 78 | |
| Year 2022 | Quarter 1 | 4 | 0 | 51 | 0 | 55 |
| Quarter 2 | 13 | 0 | 71 | 0 | 84 | |
| Quarter 3 | 14 | 0 | 57 | 0 | 71 | |
| Quarter 4 | 12 | 0 | 69 | 0 | 81 | |
| Year 2023 | Quarter 1 | 4 | 0 | 77 | 0 | 81 |
| Quarter 2 | 6 | 0 | 45 | 0 | 51 | |
| Quarter 3 | 7 | 0 | 33 | 0 | 40 | |
| Quarter 4 | 6 | 0 | 49 | 0 | 55 | |
| Year 2024 | Quarter 1 | 4 | 0 | 44 | 0 | 48 |
| Quarter 2 | 15 | 0 | 85 | 0 | 100 | |
| Quarter 3 | 8 | 0 | 19 | 0 | 27 | |
| Quarter 4 | 2 | 0 | 5 | 0 | 7 | |
| Total | 503 | 1 | 1,381 | 0 | 1,885 | |