Математика. Комплексные числа. Геометрия на плоскости [Электронный ресурс]: учебное пособие / Д.А. Тархов, К.А. Дубаренко, Е.С. Единова, А.М. Никулин, Т.А. Шемякина; Санкт-Петербургский государственный политехнический университет. — Электрон. текстовые дан. (1 файл : 761 Кб). — СПб., 2012. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать). — Текстовый документ. — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2627.pdf>.
| Period | Read | Copy | Open | Total | |||
|---|---|---|---|---|---|---|---|
| Year 2012 | Quarter 4 | November | 0 | 0 | 4 | 0 | 4 |
| December | 0 | 0 | 0 | 0 | 0 | ||
| Year 2013 | Quarter 1 | January | 1 | 0 | 2 | 0 | 3 |
| February | 1 | 0 | 1 | 0 | 2 | ||
| March | 2 | 0 | 1 | 0 | 3 | ||
| Quarter 2 | April | 6 | 0 | 2 | 0 | 8 | |
| May | 6 | 0 | 0 | 0 | 6 | ||
| June | 9 | 0 | 3 | 0 | 12 | ||
| Quarter 3 | July | 9 | 0 | 2 | 0 | 11 | |
| August | 4 | 0 | 3 | 0 | 7 | ||
| September | 4 | 0 | 5 | 0 | 9 | ||
| Quarter 4 | October | 9 | 0 | 4 | 0 | 13 | |
| November | 3 | 0 | 0 | 0 | 3 | ||
| December | 12 | 0 | 2 | 0 | 14 | ||
| Year 2014 | Quarter 1 | January | 14 | 0 | 1 | 0 | 15 |
| February | 2 | 0 | 3 | 0 | 5 | ||
| March | 4 | 0 | 1 | 0 | 5 | ||
| Quarter 2 | April | 4 | 0 | 2 | 0 | 6 | |
| May | 4 | 0 | 2 | 0 | 6 | ||
| June | 6 | 0 | 0 | 0 | 6 | ||
| Quarter 3 | July | 6 | 0 | 0 | 0 | 6 | |
| August | 3 | 0 | 2 | 0 | 5 | ||
| September | 5 | 0 | 1 | 0 | 6 | ||
| Quarter 4 | October | 6 | 0 | 7 | 0 | 13 | |
| November | 1 | 0 | 4 | 0 | 5 | ||
| December | 7 | 0 | 4 | 0 | 11 | ||
| Year 2015 | Quarter 1 | January | 5 | 0 | 1 | 0 | 6 |
| February | 7 | 0 | 10 | 0 | 17 | ||
| March | 6 | 0 | 7 | 0 | 13 | ||
| Quarter 2 | April | 8 | 0 | 3 | 0 | 11 | |
| May | 9 | 0 | 3 | 0 | 12 | ||
| June | 6 | 0 | 3 | 0 | 9 | ||
| Quarter 3 | July | 6 | 0 | 2 | 0 | 8 | |
| August | 3 | 0 | 5 | 0 | 8 | ||
| September | 2 | 0 | 1 | 0 | 3 | ||
| Quarter 4 | October | 6 | 0 | 3 | 0 | 9 | |
| November | 7 | 0 | 2 | 0 | 9 | ||
| December | 3 | 0 | 2 | 0 | 5 | ||
| Year 2016 | Quarter 1 | January | 15 | 0 | 7 | 0 | 22 |
| February | 2 | 0 | 3 | 0 | 5 | ||
| March | 11 | 0 | 6 | 0 | 17 | ||
| Quarter 2 | April | 4 | 0 | 3 | 0 | 7 | |
| May | 2 | 0 | 0 | 0 | 2 | ||
| June | 5 | 0 | 2 | 0 | 7 | ||
| Quarter 3 | July | 3 | 0 | 1 | 0 | 4 | |
| August | 1 | 0 | 0 | 0 | 1 | ||
| September | 13 | 0 | 3 | 0 | 16 | ||
| Quarter 4 | October | 14 | 0 | 5 | 0 | 19 | |
| November | 5 | 0 | 5 | 0 | 10 | ||
| December | 4 | 0 | 5 | 0 | 9 | ||
| Year 2017 | Quarter 1 | January | 2 | 0 | 1 | 0 | 3 |
| February | 2 | 0 | 0 | 0 | 2 | ||
| March | 8 | 0 | 3 | 0 | 11 | ||
| Quarter 2 | April | 0 | 0 | 1 | 0 | 1 | |
| May | 5 | 0 | 4 | 0 | 9 | ||
| June | 2 | 0 | 3 | 0 | 5 | ||
| Quarter 3 | July | 6 | 0 | 6 | 0 | 12 | |
| August | 3 | 0 | 4 | 0 | 7 | ||
| September | 7 | 0 | 3 | 0 | 10 | ||
| Quarter 4 | October | 3 | 0 | 9 | 0 | 12 | |
| November | 2 | 0 | 5 | 0 | 7 | ||
| December | 3 | 0 | 7 | 0 | 10 | ||
| Year 2018 | Quarter 1 | January | 2 | 0 | 6 | 0 | 8 |
| February | 3 | 0 | 5 | 0 | 8 | ||
| March | 5 | 0 | 4 | 0 | 9 | ||
| Quarter 2 | April | 3 | 0 | 2 | 0 | 5 | |
| May | 2 | 0 | 0 | 0 | 2 | ||
| June | 3 | 0 | 8 | 0 | 11 | ||
| Quarter 3 | July | 6 | 0 | 3 | 0 | 9 | |
| August | 5 | 0 | 7 | 0 | 12 | ||
| September | 6 | 0 | 13 | 0 | 19 | ||
| Quarter 4 | October | 15 | 0 | 10 | 0 | 25 | |
| November | 5 | 0 | 8 | 0 | 13 | ||
| December | 4 | 0 | 4 | 0 | 8 | ||
| Year 2019 | Quarter 1 | January | 10 | 0 | 9 | 0 | 19 |
| February | 6 | 0 | 2 | 0 | 8 | ||
| March | 0 | 0 | 7 | 0 | 7 | ||
| Quarter 2 | April | 2 | 0 | 4 | 0 | 6 | |
| May | 5 | 0 | 3 | 0 | 8 | ||
| June | 1 | 0 | 2 | 0 | 3 | ||
| Quarter 3 | July | 2 | 0 | 4 | 0 | 6 | |
| August | 6 | 0 | 2 | 0 | 8 | ||
| September | 2 | 0 | 4 | 0 | 6 | ||
| Quarter 4 | October | 1 | 0 | 4 | 0 | 5 | |
| November | 0 | 0 | 4 | 0 | 4 | ||
| December | 1 | 0 | 8 | 0 | 9 | ||
| Year 2020 | Quarter 1 | January | 2 | 0 | 4 | 0 | 6 |
| February | 2 | 0 | 3 | 0 | 5 | ||
| March | 4 | 0 | 9 | 0 | 13 | ||
| Quarter 2 | April | 6 | 0 | 4 | 0 | 10 | |
| May | 4 | 0 | 0 | 0 | 4 | ||
| June | 8 | 0 | 0 | 0 | 8 | ||
| Quarter 3 | July | 3 | 0 | 0 | 0 | 3 | |
| August | 1 | 0 | 0 | 0 | 1 | ||
| September | 3 | 0 | 0 | 0 | 3 | ||
| Quarter 4 | October | 3 | 0 | 2 | 0 | 5 | |
| November | 2 | 0 | 4 | 0 | 6 | ||
| December | 6 | 0 | 1 | 0 | 7 | ||
| Year 2021 | Quarter 1 | January | 7 | 0 | 1 | 0 | 8 |
| February | 65 | 0 | 6 | 0 | 71 | ||
| March | 9 | 0 | 0 | 0 | 9 | ||
| Quarter 2 | April | 6 | 0 | 4 | 0 | 10 | |
| May | 9 | 0 | 3 | 0 | 12 | ||
| June | 14 | 0 | 4 | 0 | 18 | ||
| Quarter 3 | July | 6 | 0 | 2 | 0 | 8 | |
| August | 5 | 0 | 3 | 0 | 8 | ||
| September | 5 | 0 | 2 | 0 | 7 | ||
| Quarter 4 | October | 0 | 0 | 3 | 0 | 3 | |
| November | 0 | 0 | 2 | 0 | 2 | ||
| December | 6 | 0 | 4 | 0 | 10 | ||
| Year 2022 | Quarter 1 | January | 7 | 0 | 2 | 0 | 9 |
| February | 7 | 0 | 4 | 0 | 11 | ||
| March | 12 | 0 | 4 | 0 | 16 | ||
| Quarter 2 | April | 0 | 0 | 2 | 0 | 2 | |
| May | 5 | 0 | 8 | 0 | 13 | ||
| June | 3 | 0 | 4 | 0 | 7 | ||
| Quarter 3 | July | 5 | 0 | 0 | 0 | 5 | |
| August | 7 | 0 | 3 | 0 | 10 | ||
| September | 19 | 0 | 3 | 0 | 22 | ||
| Quarter 4 | October | 11 | 0 | 1 | 0 | 12 | |
| November | 15 | 0 | 5 | 0 | 20 | ||
| December | 29 | 0 | 6 | 0 | 35 | ||
| Year 2023 | Quarter 1 | January | 27 | 0 | 1 | 0 | 28 |
| February | 11 | 0 | 3 | 0 | 14 | ||
| March | 9 | 0 | 13 | 0 | 22 | ||
| Quarter 2 | April | 5 | 0 | 2 | 0 | 7 | |
| May | 9 | 0 | 5 | 0 | 14 | ||
| June | 3 | 0 | 4 | 0 | 7 | ||
| Quarter 3 | July | 2 | 0 | 1 | 0 | 3 | |
| August | 11 | 0 | 3 | 0 | 14 | ||
| September | 15 | 0 | 4 | 0 | 19 | ||
| Quarter 4 | October | 3 | 0 | 11 | 0 | 14 | |
| November | 3 | 0 | 3 | 0 | 6 | ||
| December | 4 | 0 | 5 | 0 | 9 | ||
| Year 2024 | Quarter 1 | January | 1 | 0 | 5 | 0 | 6 |
| February | 2 | 0 | 5 | 0 | 7 | ||
| March | 2 | 0 | 4 | 0 | 6 | ||
| Quarter 2 | April | 7 | 0 | 4 | 0 | 11 | |
| May | 3 | 0 | 12 | 0 | 15 | ||
| June | 2 | 0 | 8 | 0 | 10 | ||
| Quarter 3 | July | 10 | 0 | 8 | 0 | 18 | |
| August | 8 | 0 | 9 | 0 | 17 | ||
| September | 10 | 1 | 15 | 0 | 26 | ||
| Quarter 4 | October | 1 | 0 | 7 | 0 | 8 | |
| Total | 857 | 1 | 542 | 0 | 1,400 | ||