Балтруков, Николай Николаевич. Электротехника и электроника [Электронный ресурс]: учебное пособие (теория) / Н. Н. Балтруков, Ю. Д. Кочетков. — Электрон. текстовые дан. (1 файл : 2,94 Мб). — СПб., 2011. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Текстовый файл. — Adobe Acrobat Reader 6.0. — <URL:http://elib.spbstu.ru/dl/2102.pdf>.
| Period | Read | Copy | Open | Total | |||
|---|---|---|---|---|---|---|---|
| Year 2012 | Quarter 1 | March | 0 | 0 | 3 | 0 | 3 |
| Quarter 2 | April | 0 | 0 | 2 | 0 | 2 | |
| May | 0 | 0 | 2 | 0 | 2 | ||
| June | 0 | 0 | 2 | 0 | 2 | ||
| Quarter 3 | July | 0 | 0 | 3 | 0 | 3 | |
| August | 0 | 0 | 0 | 0 | 0 | ||
| September | 0 | 0 | 18 | 0 | 18 | ||
| Quarter 4 | October | 4 | 0 | 19 | 0 | 23 | |
| November | 4 | 0 | 29 | 0 | 33 | ||
| December | 5 | 0 | 16 | 0 | 21 | ||
| Year 2013 | Quarter 1 | January | 3 | 0 | 12 | 0 | 15 |
| February | 1 | 0 | 5 | 0 | 6 | ||
| March | 1 | 0 | 3 | 0 | 4 | ||
| Quarter 2 | April | 7 | 0 | 13 | 0 | 20 | |
| May | 12 | 0 | 3 | 0 | 15 | ||
| June | 11 | 0 | 5 | 0 | 16 | ||
| Quarter 3 | July | 10 | 0 | 1 | 0 | 11 | |
| August | 11 | 0 | 5 | 0 | 16 | ||
| September | 6 | 0 | 2 | 0 | 8 | ||
| Quarter 4 | October | 12 | 0 | 8 | 0 | 20 | |
| November | 16 | 0 | 8 | 0 | 24 | ||
| December | 18 | 0 | 23 | 0 | 41 | ||
| Year 2014 | Quarter 1 | January | 10 | 0 | 5 | 0 | 15 |
| February | 16 | 0 | 5 | 0 | 21 | ||
| March | 9 | 0 | 5 | 0 | 14 | ||
| Quarter 2 | April | 9 | 0 | 3 | 0 | 12 | |
| May | 10 | 0 | 23 | 0 | 33 | ||
| June | 25 | 0 | 8 | 0 | 33 | ||
| Quarter 3 | July | 8 | 0 | 4 | 0 | 12 | |
| August | 7 | 0 | 4 | 0 | 11 | ||
| September | 16 | 0 | 16 | 0 | 32 | ||
| Quarter 4 | October | 17 | 0 | 23 | 0 | 40 | |
| November | 7 | 0 | 6 | 0 | 13 | ||
| December | 15 | 0 | 4 | 0 | 19 | ||
| Year 2015 | Quarter 1 | January | 16 | 0 | 7 | 0 | 23 |
| February | 5 | 0 | 1 | 0 | 6 | ||
| March | 9 | 0 | 8 | 0 | 17 | ||
| Quarter 2 | April | 9 | 0 | 10 | 0 | 19 | |
| May | 7 | 0 | 4 | 0 | 11 | ||
| June | 10 | 0 | 9 | 0 | 19 | ||
| Quarter 3 | July | 7 | 0 | 11 | 0 | 18 | |
| August | 2 | 0 | 6 | 0 | 8 | ||
| September | 76 | 0 | 56 | 0 | 132 | ||
| Quarter 4 | October | 50 | 1 | 32 | 0 | 83 | |
| November | 25 | 0 | 9 | 0 | 34 | ||
| December | 33 | 0 | 16 | 0 | 49 | ||
| Year 2016 | Quarter 1 | January | 14 | 0 | 21 | 0 | 35 |
| February | 28 | 0 | 10 | 0 | 38 | ||
| March | 17 | 0 | 10 | 0 | 27 | ||
| Quarter 2 | April | 15 | 0 | 6 | 0 | 21 | |
| May | 20 | 0 | 10 | 0 | 30 | ||
| June | 23 | 0 | 14 | 0 | 37 | ||
| Quarter 3 | July | 9 | 0 | 10 | 0 | 19 | |
| August | 7 | 0 | 6 | 0 | 13 | ||
| September | 24 | 0 | 14 | 0 | 38 | ||
| Quarter 4 | October | 20 | 0 | 31 | 0 | 51 | |
| November | 8 | 0 | 39 | 0 | 47 | ||
| December | 13 | 0 | 43 | 0 | 56 | ||
| Year 2017 | Quarter 1 | January | 3 | 0 | 47 | 0 | 50 |
| February | 2 | 0 | 3 | 0 | 5 | ||
| March | 9 | 0 | 39 | 0 | 48 | ||
| Quarter 2 | April | 4 | 0 | 40 | 0 | 44 | |
| May | 10 | 0 | 68 | 0 | 78 | ||
| June | 4 | 0 | 77 | 0 | 81 | ||
| Quarter 3 | July | 6 | 0 | 27 | 0 | 33 | |
| August | 3 | 0 | 48 | 0 | 51 | ||
| September | 6 | 0 | 49 | 0 | 55 | ||
| Quarter 4 | October | 3 | 0 | 58 | 0 | 61 | |
| November | 10 | 0 | 64 | 0 | 74 | ||
| December | 5 | 0 | 69 | 0 | 74 | ||
| Year 2018 | Quarter 1 | January | 17 | 0 | 67 | 0 | 84 |
| February | 10 | 0 | 44 | 0 | 54 | ||
| March | 13 | 0 | 65 | 0 | 78 | ||
| Quarter 2 | April | 4 | 0 | 57 | 0 | 61 | |
| May | 5 | 0 | 75 | 0 | 80 | ||
| June | 6 | 0 | 120 | 0 | 126 | ||
| Quarter 3 | July | 7 | 0 | 42 | 0 | 49 | |
| August | 7 | 0 | 21 | 0 | 28 | ||
| September | 12 | 0 | 30 | 0 | 42 | ||
| Quarter 4 | October | 8 | 0 | 26 | 0 | 34 | |
| November | 8 | 0 | 23 | 0 | 31 | ||
| December | 15 | 0 | 26 | 0 | 41 | ||
| Year 2019 | Quarter 1 | January | 8 | 0 | 18 | 0 | 26 |
| February | 6 | 0 | 26 | 0 | 32 | ||
| March | 5 | 0 | 27 | 0 | 32 | ||
| Quarter 2 | April | 4 | 0 | 17 | 0 | 21 | |
| May | 3 | 0 | 28 | 0 | 31 | ||
| June | 6 | 0 | 42 | 0 | 48 | ||
| Quarter 3 | July | 2 | 0 | 11 | 0 | 13 | |
| August | 13 | 0 | 9 | 0 | 22 | ||
| September | 13 | 0 | 33 | 0 | 46 | ||
| Quarter 4 | October | 6 | 0 | 22 | 0 | 28 | |
| November | 2 | 0 | 35 | 0 | 37 | ||
| December | 2 | 0 | 41 | 0 | 43 | ||
| Year 2020 | Quarter 1 | January | 0 | 0 | 22 | 0 | 22 |
| February | 1 | 0 | 25 | 0 | 26 | ||
| March | 8 | 0 | 17 | 0 | 25 | ||
| Quarter 2 | April | 10 | 0 | 9 | 0 | 19 | |
| May | 14 | 0 | 3 | 0 | 17 | ||
| June | 23 | 0 | 7 | 0 | 30 | ||
| Quarter 3 | July | 10 | 0 | 2 | 0 | 12 | |
| August | 10 | 0 | 0 | 0 | 10 | ||
| September | 8 | 0 | 5 | 0 | 13 | ||
| Quarter 4 | October | 11 | 0 | 1 | 0 | 12 | |
| November | 10 | 0 | 9 | 0 | 19 | ||
| December | 7 | 0 | 37 | 0 | 44 | ||
| Year 2021 | Quarter 1 | January | 20 | 0 | 48 | 0 | 68 |
| February | 14 | 0 | 43 | 0 | 57 | ||
| March | 3 | 0 | 48 | 0 | 51 | ||
| Quarter 2 | April | 5 | 0 | 47 | 0 | 52 | |
| May | 7 | 0 | 38 | 0 | 45 | ||
| June | 4 | 0 | 51 | 0 | 55 | ||
| Quarter 3 | July | 4 | 0 | 28 | 0 | 32 | |
| August | 3 | 0 | 36 | 0 | 39 | ||
| September | 7 | 0 | 89 | 0 | 96 | ||
| Quarter 4 | October | 7 | 0 | 41 | 0 | 48 | |
| November | 10 | 0 | 48 | 0 | 58 | ||
| December | 6 | 0 | 45 | 0 | 51 | ||
| Year 2022 | Quarter 1 | January | 11 | 0 | 47 | 0 | 58 |
| February | 6 | 0 | 30 | 0 | 36 | ||
| March | 4 | 0 | 19 | 0 | 23 | ||
| Quarter 2 | April | 8 | 0 | 52 | 0 | 60 | |
| May | 5 | 0 | 40 | 0 | 45 | ||
| June | 21 | 0 | 48 | 0 | 69 | ||
| Quarter 3 | July | 7 | 0 | 27 | 0 | 34 | |
| August | 5 | 0 | 17 | 0 | 22 | ||
| September | 6 | 0 | 31 | 0 | 37 | ||
| Quarter 4 | October | 2 | 0 | 43 | 0 | 45 | |
| November | 3 | 0 | 38 | 0 | 41 | ||
| December | 8 | 0 | 61 | 0 | 69 | ||
| Year 2023 | Quarter 1 | January | 7 | 0 | 42 | 0 | 49 |
| February | 4 | 0 | 37 | 0 | 41 | ||
| March | 5 | 0 | 34 | 0 | 39 | ||
| Quarter 2 | April | 8 | 0 | 31 | 0 | 39 | |
| May | 9 | 1 | 60 | 0 | 70 | ||
| June | 7 | 0 | 55 | 0 | 62 | ||
| Quarter 3 | July | 2 | 0 | 23 | 0 | 25 | |
| August | 4 | 0 | 21 | 0 | 25 | ||
| September | 4 | 0 | 30 | 0 | 34 | ||
| Quarter 4 | October | 6 | 0 | 30 | 0 | 36 | |
| November | 5 | 0 | 64 | 0 | 69 | ||
| December | 8 | 0 | 49 | 0 | 57 | ||
| Year 2024 | Quarter 1 | January | 3 | 0 | 38 | 0 | 41 |
| February | 4 | 0 | 51 | 0 | 55 | ||
| March | 3 | 0 | 47 | 0 | 50 | ||
| Quarter 2 | April | 9 | 0 | 51 | 0 | 60 | |
| May | 8 | 0 | 51 | 0 | 59 | ||
| June | 9 | 0 | 52 | 0 | 61 | ||
| Quarter 3 | July | 3 | 0 | 29 | 0 | 32 | |
| August | 7 | 0 | 26 | 0 | 33 | ||
| September | 13 | 0 | 34 | 0 | 47 | ||
| Quarter 4 | October | 24 | 0 | 35 | 0 | 59 | |
| November | 15 | 0 | 57 | 0 | 72 | ||
| December | 7 | 0 | 59 | 0 | 66 | ||
| Year 2025 | Quarter 1 | January | 8 | 0 | 45 | 0 | 53 |
| February | 6 | 0 | 24 | 0 | 30 | ||
| March | 9 | 0 | 38 | 0 | 47 | ||
| Quarter 2 | April | 13 | 0 | 23 | 0 | 36 | |
| May | 9 | 0 | 13 | 0 | 22 | ||
| June | 12 | 0 | 23 | 0 | 35 | ||
| Quarter 3 | July | 1 | 0 | 9 | 0 | 10 | |
| Total | 1,484 | 2 | 4,498 | 0 | 5,984 | ||