Шитов, Егор Викторович. Повышение эффективности металлургического производства азотсодержащих сталей с целью стабилизации их служебных характеристик [Электронный ресурс]: автореф. дис. … канд. техн. наук:05.16.02 / Е. В. Шитов; Санкт-Петербургский государственный политехнический университет. — Электрон. текстовые дан. (1 файл : 551 Кб). — СПб., 2007. — 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/1445.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 1 | 1 | 0 | 1 | 0 | 2 |
| Quarter 2 | 5 | 0 | 19 | 0 | 24 | |
| Quarter 3 | 5 | 0 | 31 | 0 | 36 | |
| Quarter 4 | 5 | 0 | 80 | 0 | 85 | |
| Year 2013 | Quarter 1 | 3 | 0 | 63 | 0 | 66 |
| Quarter 2 | 17 | 0 | 15 | 0 | 32 | |
| Quarter 3 | 7 | 0 | 2 | 0 | 9 | |
| Quarter 4 | 7 | 0 | 6 | 0 | 13 | |
| Year 2014 | Quarter 1 | 6 | 0 | 6 | 0 | 12 |
| Quarter 2 | 7 | 0 | 26 | 0 | 33 | |
| Quarter 3 | 8 | 0 | 12 | 0 | 20 | |
| Quarter 4 | 11 | 0 | 8 | 0 | 19 | |
| Year 2015 | Quarter 1 | 9 | 0 | 15 | 0 | 24 |
| Quarter 2 | 9 | 0 | 16 | 0 | 25 | |
| Quarter 3 | 9 | 0 | 17 | 0 | 26 | |
| Quarter 4 | 13 | 0 | 22 | 0 | 35 | |
| Year 2016 | Quarter 1 | 6 | 0 | 12 | 0 | 18 |
| Quarter 2 | 14 | 0 | 8 | 0 | 22 | |
| Quarter 3 | 5 | 0 | 14 | 0 | 19 | |
| Quarter 4 | 14 | 0 | 46 | 0 | 60 | |
| Year 2017 | Quarter 1 | 8 | 0 | 57 | 0 | 65 |
| Quarter 2 | 6 | 0 | 59 | 0 | 65 | |
| Quarter 3 | 10 | 0 | 69 | 0 | 79 | |
| Quarter 4 | 16 | 0 | 56 | 0 | 72 | |
| Year 2018 | Quarter 1 | 10 | 0 | 77 | 0 | 87 |
| Quarter 2 | 8 | 0 | 127 | 0 | 135 | |
| Quarter 3 | 17 | 0 | 95 | 0 | 112 | |
| Quarter 4 | 5 | 0 | 111 | 0 | 116 | |
| Year 2019 | Quarter 1 | 5 | 0 | 103 | 0 | 108 |
| Quarter 2 | 2 | 0 | 83 | 0 | 85 | |
| Quarter 3 | 2 | 0 | 56 | 0 | 58 | |
| Quarter 4 | 4 | 0 | 100 | 0 | 104 | |
| Year 2020 | Quarter 1 | 8 | 0 | 53 | 0 | 61 |
| Quarter 2 | 5 | 0 | 1 | 0 | 6 | |
| Quarter 3 | 8 | 0 | 0 | 0 | 8 | |
| Quarter 4 | 7 | 0 | 23 | 0 | 30 | |
| Year 2021 | Quarter 1 | 5 | 0 | 27 | 0 | 32 |
| Quarter 2 | 1 | 0 | 24 | 0 | 25 | |
| Quarter 3 | 5 | 0 | 33 | 0 | 38 | |
| Quarter 4 | 7 | 0 | 60 | 0 | 67 | |
| Year 2022 | Quarter 1 | 5 | 0 | 69 | 0 | 74 |
| Quarter 2 | 4 | 0 | 43 | 0 | 47 | |
| Quarter 3 | 8 | 0 | 43 | 0 | 51 | |
| Quarter 4 | 11 | 0 | 44 | 0 | 55 | |
| Year 2023 | Quarter 1 | 5 | 0 | 55 | 0 | 60 |
| Quarter 2 | 5 | 0 | 62 | 0 | 67 | |
| Quarter 3 | 8 | 0 | 44 | 0 | 52 | |
| Quarter 4 | 14 | 0 | 45 | 0 | 59 | |
| Year 2024 | Quarter 1 | 8 | 1 | 47 | 0 | 56 |
| Quarter 2 | 10 | 0 | 67 | 0 | 77 | |
| Quarter 3 | 8 | 0 | 43 | 0 | 51 | |
| Total | 386 | 1 | 2,195 | 0 | 2,582 | |