Гельгор, Александр Леонидович. Сотовые сети мобильной связи стандарта UMTS [Электронный ресурс]: учебное пособие / А.Л. Гельгор, Е.А. Попов; Санкт-Петербургский государственный политехнический университет. — Электрон. текстовые дан. (1 файл : 1,6 Мб). — СПб., 2011. — Загл. с титул. экрана. — Электронная версия печатной публикации. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Текстовый документ. — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2783.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2013 | Quarter 1 | 7 | 0 | 7 | 0 | 14 |
| Quarter 2 | 39 | 0 | 7 | 0 | 46 | |
| Quarter 3 | 31 | 0 | 13 | 0 | 44 | |
| Quarter 4 | 22 | 0 | 15 | 0 | 37 | |
| Year 2014 | Quarter 1 | 29 | 0 | 10 | 0 | 39 |
| Quarter 2 | 24 | 0 | 8 | 0 | 32 | |
| Quarter 3 | 30 | 0 | 9 | 0 | 39 | |
| Quarter 4 | 27 | 0 | 13 | 0 | 40 | |
| Year 2015 | Quarter 1 | 24 | 0 | 8 | 0 | 32 |
| Quarter 2 | 28 | 0 | 9 | 0 | 37 | |
| Quarter 3 | 21 | 0 | 14 | 0 | 35 | |
| Quarter 4 | 19 | 0 | 13 | 0 | 32 | |
| Year 2016 | Quarter 1 | 37 | 0 | 11 | 0 | 48 |
| Quarter 2 | 16 | 0 | 9 | 0 | 25 | |
| Quarter 3 | 16 | 0 | 4 | 0 | 20 | |
| Quarter 4 | 29 | 0 | 12 | 0 | 41 | |
| Year 2017 | Quarter 1 | 15 | 0 | 8 | 0 | 23 |
| Quarter 2 | 7 | 0 | 5 | 0 | 12 | |
| Quarter 3 | 15 | 0 | 6 | 0 | 21 | |
| Quarter 4 | 17 | 0 | 25 | 0 | 42 | |
| Year 2018 | Quarter 1 | 7 | 0 | 30 | 0 | 37 |
| Quarter 2 | 15 | 0 | 120 | 0 | 135 | |
| Quarter 3 | 11 | 0 | 89 | 0 | 100 | |
| Quarter 4 | 10 | 0 | 32 | 0 | 42 | |
| Year 2019 | Quarter 1 | 4 | 0 | 29 | 0 | 33 |
| Quarter 2 | 6 | 0 | 36 | 0 | 42 | |
| Quarter 3 | 8 | 0 | 23 | 0 | 31 | |
| Quarter 4 | 0 | 0 | 8 | 0 | 8 | |
| Year 2020 | Quarter 1 | 12 | 0 | 16 | 0 | 28 |
| Quarter 2 | 18 | 0 | 1 | 0 | 19 | |
| Quarter 3 | 16 | 0 | 1 | 0 | 17 | |
| Quarter 4 | 10 | 0 | 15 | 0 | 25 | |
| Year 2021 | Quarter 1 | 11 | 0 | 16 | 0 | 27 |
| Quarter 2 | 14 | 0 | 16 | 0 | 30 | |
| Quarter 3 | 7 | 0 | 14 | 0 | 21 | |
| Quarter 4 | 30 | 0 | 17 | 0 | 47 | |
| Year 2022 | Quarter 1 | 22 | 0 | 5 | 0 | 27 |
| Quarter 2 | 12 | 0 | 10 | 0 | 22 | |
| Quarter 3 | 9 | 0 | 16 | 0 | 25 | |
| Quarter 4 | 20 | 0 | 13 | 0 | 33 | |
| Year 2023 | Quarter 1 | 11 | 0 | 13 | 0 | 24 |
| Quarter 2 | 9 | 0 | 10 | 0 | 19 | |
| Quarter 3 | 3 | 0 | 9 | 0 | 12 | |
| Quarter 4 | 9 | 0 | 21 | 0 | 30 | |
| Year 2024 | Quarter 1 | 5 | 0 | 27 | 0 | 32 |
| Quarter 2 | 10 | 0 | 19 | 0 | 29 | |
| Quarter 3 | 16 | 0 | 13 | 0 | 29 | |
| Quarter 4 | 4 | 0 | 2 | 0 | 6 | |
| Total | 762 | 0 | 827 | 0 | 1,589 | |