Шакиров, Мансур Акмелович. Универсальная теория автотрансформатора = Universal theory of autotransformer [Электронный ресурс] / М. А. Шакиров. — (Электротехника). — Электрон. текстовые дан. (1 файл : 1,52 Мб). — DOI 10.5862/JEST.219.11 // Научно-технические ведомости СПбГПУ. – 2015. – № 2 (219) [Электронный ресурс]. — Загл. с титул. экрана. — Электронная версия печатной публикации. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Текстовый файл. — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/7975.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2015 | Quarter 4 | 25 | 0 | 30 | 0 | 55 |
| Year 2016 | Quarter 1 | 9 | 0 | 6 | 0 | 15 |
| Quarter 2 | 13 | 0 | 7 | 0 | 20 | |
| Quarter 3 | 3 | 0 | 12 | 0 | 15 | |
| Quarter 4 | 7 | 0 | 44 | 0 | 51 | |
| Year 2017 | Quarter 1 | 5 | 0 | 15 | 0 | 20 |
| Quarter 2 | 3 | 0 | 11 | 0 | 14 | |
| Quarter 3 | 13 | 0 | 29 | 0 | 42 | |
| Quarter 4 | 5 | 0 | 13 | 0 | 18 | |
| Year 2018 | Quarter 1 | 7 | 0 | 20 | 0 | 27 |
| Quarter 2 | 4 | 0 | 17 | 0 | 21 | |
| Quarter 3 | 15 | 0 | 14 | 0 | 29 | |
| Quarter 4 | 2 | 0 | 9 | 0 | 11 | |
| Year 2019 | Quarter 1 | 3 | 0 | 6 | 0 | 9 |
| Quarter 2 | 3 | 0 | 0 | 0 | 3 | |
| Quarter 3 | 3 | 0 | 9 | 0 | 12 | |
| Quarter 4 | 1 | 0 | 4 | 0 | 5 | |
| Year 2020 | Quarter 1 | 6 | 0 | 16 | 0 | 22 |
| Quarter 2 | 8 | 0 | 0 | 0 | 8 | |
| Quarter 3 | 8 | 0 | 0 | 0 | 8 | |
| Quarter 4 | 5 | 0 | 11 | 0 | 16 | |
| Year 2021 | Quarter 1 | 13 | 0 | 3 | 0 | 16 |
| Quarter 2 | 16 | 0 | 9 | 0 | 25 | |
| Quarter 3 | 12 | 0 | 11 | 0 | 23 | |
| Quarter 4 | 4 | 0 | 9 | 0 | 13 | |
| Year 2022 | Quarter 1 | 10 | 0 | 8 | 0 | 18 |
| Quarter 2 | 3 | 0 | 7 | 0 | 10 | |
| Quarter 3 | 24 | 0 | 6 | 0 | 30 | |
| Quarter 4 | 27 | 0 | 7 | 0 | 34 | |
| Year 2023 | Quarter 1 | 5 | 0 | 8 | 0 | 13 |
| Quarter 2 | 3 | 0 | 12 | 0 | 15 | |
| Quarter 3 | 3 | 0 | 11 | 0 | 14 | |
| Quarter 4 | 8 | 0 | 25 | 0 | 33 | |
| Year 2024 | Quarter 1 | 5 | 0 | 44 | 0 | 49 |
| Quarter 2 | 12 | 0 | 33 | 0 | 45 | |
| Quarter 3 | 6 | 0 | 25 | 0 | 31 | |
| Quarter 4 | 14 | 0 | 15 | 0 | 29 | |
| Year 2025 | Quarter 1 | 21 | 0 | 12 | 0 | 33 |
| Quarter 2 | 39 | 0 | 18 | 0 | 57 | |
| Quarter 3 | 6 | 0 | 5 | 0 | 11 | |
| Total | 379 | 0 | 541 | 0 | 920 | |