Стрелец, Ксения Игоревна. Инженерные решения обеспечения энергоэффективности зданий. Механические системы очистки воздуха промышленных зданий [Электронный ресурс]: учебное пособие / К.И. Стрелец; Санкт-Петербургский государственный политехнический университет. — Электрон. текстовые дан. (1 файл : 2,82 Мб). — Санкт-Петербург, 2012. — 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/2/3018.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2013 | Quarter 2 | 44 | 0 | 20 | 0 | 64 |
| Quarter 3 | 17 | 0 | 11 | 0 | 28 | |
| Quarter 4 | 10 | 0 | 5 | 0 | 15 | |
| Year 2014 | Quarter 1 | 18 | 0 | 8 | 0 | 26 |
| Quarter 2 | 21 | 0 | 6 | 0 | 27 | |
| Quarter 3 | 11 | 0 | 11 | 0 | 22 | |
| Quarter 4 | 15 | 0 | 9 | 0 | 24 | |
| Year 2015 | Quarter 1 | 15 | 0 | 7 | 0 | 22 |
| Quarter 2 | 14 | 0 | 8 | 0 | 22 | |
| Quarter 3 | 14 | 0 | 3 | 0 | 17 | |
| Quarter 4 | 27 | 0 | 10 | 0 | 37 | |
| Year 2016 | Quarter 1 | 13 | 0 | 16 | 0 | 29 |
| Quarter 2 | 17 | 0 | 2 | 0 | 19 | |
| Quarter 3 | 13 | 0 | 4 | 0 | 17 | |
| Quarter 4 | 13 | 0 | 11 | 0 | 24 | |
| Year 2017 | Quarter 1 | 10 | 0 | 2 | 0 | 12 |
| Quarter 2 | 17 | 0 | 5 | 0 | 22 | |
| Quarter 3 | 13 | 0 | 13 | 0 | 26 | |
| Quarter 4 | 13 | 0 | 12 | 0 | 25 | |
| Year 2018 | Quarter 1 | 12 | 0 | 16 | 0 | 28 |
| Quarter 2 | 15 | 0 | 102 | 0 | 117 | |
| Quarter 3 | 21 | 0 | 111 | 0 | 132 | |
| Quarter 4 | 20 | 0 | 79 | 0 | 99 | |
| Year 2019 | Quarter 1 | 14 | 0 | 95 | 0 | 109 |
| Quarter 2 | 13 | 0 | 122 | 0 | 135 | |
| Quarter 3 | 9 | 0 | 57 | 0 | 66 | |
| Quarter 4 | 10 | 0 | 228 | 0 | 238 | |
| Year 2020 | Quarter 1 | 18 | 0 | 72 | 0 | 90 |
| Quarter 2 | 14 | 0 | 4 | 0 | 18 | |
| Quarter 3 | 10 | 0 | 1 | 0 | 11 | |
| Quarter 4 | 10 | 0 | 37 | 0 | 47 | |
| Year 2021 | Quarter 1 | 5 | 0 | 117 | 0 | 122 |
| Quarter 2 | 16 | 0 | 142 | 0 | 158 | |
| Quarter 3 | 16 | 0 | 195 | 0 | 211 | |
| Quarter 4 | 4 | 0 | 284 | 0 | 288 | |
| Year 2022 | Quarter 1 | 5 | 0 | 241 | 0 | 246 |
| Quarter 2 | 3 | 0 | 255 | 0 | 258 | |
| Quarter 3 | 15 | 0 | 140 | 0 | 155 | |
| Quarter 4 | 28 | 0 | 186 | 0 | 214 | |
| Year 2023 | Quarter 1 | 23 | 0 | 211 | 0 | 234 |
| Quarter 2 | 5 | 0 | 229 | 0 | 234 | |
| Quarter 3 | 9 | 0 | 247 | 0 | 256 | |
| Quarter 4 | 5 | 0 | 331 | 0 | 336 | |
| Year 2024 | Quarter 1 | 4 | 0 | 326 | 0 | 330 |
| Quarter 2 | 14 | 0 | 447 | 0 | 461 | |
| Quarter 3 | 4 | 0 | 169 | 0 | 173 | |
| Total | 637 | 0 | 4,607 | 0 | 5,244 | |