Слепченок, В. С. Повышение энергоэффективности теплоизоляции трубопроводов тепловых сетей северных и северо-восточных регионов России [Электронный ресурс] / В. С. Слепченок, Г. П. Петраков. — (Теплоснабжение). — Электрон. текстовые дан. // Инженерно-строительный журнал / Санкт-Петербургский политехнический университет Петра Великого. – Санкт-Петербург. – 2011. – Загл. с титул. экрана. — Электрон. версия печ. публикации. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Текстовый файл. — Adobe Acrobat Reader 6.0. — <URL:http://elib.spbstu.ru/dl/2/ed-37_400015_0000926731pa.pdf>. — <URL:https://engstroy.spbstu.ru/article/2011.22.5/>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 4 | 0 | 0 | 2 | 0 | 2 |
| Year 2013 | Quarter 1 | 0 | 0 | 12 | 0 | 12 |
| Quarter 2 | 0 | 0 | 12 | 0 | 12 | |
| Quarter 3 | 0 | 0 | 1 | 0 | 1 | |
| Quarter 4 | 0 | 0 | 7 | 0 | 7 | |
| Year 2014 | Quarter 1 | 0 | 0 | 1 | 0 | 1 |
| Quarter 2 | 0 | 0 | 5 | 0 | 5 | |
| Quarter 3 | 0 | 0 | 7 | 0 | 7 | |
| Quarter 4 | 0 | 0 | 10 | 0 | 10 | |
| Year 2015 | Quarter 1 | 0 | 0 | 12 | 0 | 12 |
| Quarter 2 | 0 | 0 | 6 | 0 | 6 | |
| Quarter 3 | 0 | 0 | 7 | 0 | 7 | |
| Quarter 4 | 0 | 0 | 4 | 0 | 4 | |
| Year 2016 | Quarter 1 | 0 | 0 | 7 | 0 | 7 |
| Quarter 2 | 0 | 0 | 6 | 0 | 6 | |
| Quarter 3 | 0 | 0 | 23 | 0 | 23 | |
| Quarter 4 | 0 | 0 | 17 | 0 | 17 | |
| Year 2017 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 4 | 0 | 4 | |
| Quarter 3 | 0 | 0 | 10 | 0 | 10 | |
| Quarter 4 | 0 | 0 | 2 | 0 | 2 | |
| Year 2018 | Quarter 1 | 0 | 0 | 10 | 0 | 10 |
| Quarter 2 | 0 | 0 | 6 | 0 | 6 | |
| Quarter 3 | 0 | 0 | 4 | 0 | 4 | |
| Quarter 4 | 0 | 0 | 6 | 0 | 6 | |
| Year 2019 | Quarter 1 | 0 | 0 | 8 | 0 | 8 |
| Quarter 2 | 0 | 0 | 2 | 0 | 2 | |
| Quarter 3 | 0 | 0 | 6 | 0 | 6 | |
| Quarter 4 | 0 | 0 | 6 | 0 | 6 | |
| Year 2020 | Quarter 1 | 0 | 0 | 6 | 0 | 6 |
| Quarter 2 | 1 | 0 | 1 | 0 | 2 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 1 | 0 | 6 | 0 | 7 | |
| Year 2021 | Quarter 1 | 3 | 0 | 4 | 0 | 7 |
| Quarter 2 | 3 | 0 | 7 | 0 | 10 | |
| Quarter 3 | 1 | 0 | 2 | 0 | 3 | |
| Quarter 4 | 0 | 0 | 11 | 0 | 11 | |
| Year 2022 | Quarter 1 | 1 | 0 | 9 | 0 | 10 |
| Quarter 2 | 0 | 0 | 11 | 0 | 11 | |
| Quarter 3 | 1 | 0 | 4 | 0 | 5 | |
| Quarter 4 | 1 | 0 | 2 | 0 | 3 | |
| Year 2023 | Quarter 1 | 1 | 0 | 14 | 0 | 15 |
| Quarter 2 | 7 | 0 | 14 | 0 | 21 | |
| Quarter 3 | 3 | 0 | 10 | 0 | 13 | |
| Quarter 4 | 7 | 0 | 14 | 0 | 21 | |
| Year 2024 | Quarter 1 | 3 | 0 | 13 | 0 | 16 |
| Quarter 2 | 7 | 0 | 46 | 0 | 53 | |
| Quarter 3 | 5 | 0 | 23 | 0 | 28 | |
| Total | 45 | 0 | 400 | 0 | 445 | |