Кудрицкий, Геннадий Александрович. Определение пар простых чисел с разностью в две единицы (определение близнецов) [Электронный ресурс]: монография / Г. А. Кудрицкий. — Электрон. текстовые дан. (1 файл : 272 КБ). — Санкт-Петербург, 2017. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Текстовый файл. — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/z17-1.pdf>. — <URL:http://doi.org/10.18720/SPBPU/2/z17-1>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2017 | Quarter 1 | 11 | 0 | 5 | 0 | 16 |
| Quarter 2 | 9 | 0 | 29 | 0 | 38 | |
| Quarter 3 | 9 | 0 | 13 | 0 | 22 | |
| Quarter 4 | 6 | 0 | 16 | 0 | 22 | |
| Year 2018 | Quarter 1 | 10 | 0 | 24 | 0 | 34 |
| Quarter 2 | 8 | 0 | 10 | 0 | 18 | |
| Quarter 3 | 12 | 0 | 19 | 0 | 31 | |
| Quarter 4 | 4 | 0 | 10 | 0 | 14 | |
| Year 2019 | Quarter 1 | 3 | 0 | 10 | 0 | 13 |
| Quarter 2 | 4 | 0 | 9 | 0 | 13 | |
| Quarter 3 | 7 | 0 | 6 | 0 | 13 | |
| Quarter 4 | 1 | 0 | 7 | 0 | 8 | |
| Year 2020 | Quarter 1 | 13 | 0 | 19 | 0 | 32 |
| Quarter 2 | 13 | 0 | 0 | 0 | 13 | |
| Quarter 3 | 9 | 0 | 0 | 0 | 9 | |
| Quarter 4 | 13 | 0 | 16 | 0 | 29 | |
| Year 2021 | Quarter 1 | 16 | 0 | 18 | 0 | 34 |
| Quarter 2 | 13 | 0 | 16 | 0 | 29 | |
| Quarter 3 | 19 | 0 | 9 | 0 | 28 | |
| Quarter 4 | 10 | 0 | 17 | 0 | 27 | |
| Year 2022 | Quarter 1 | 8 | 0 | 16 | 0 | 24 |
| Quarter 2 | 13 | 0 | 11 | 0 | 24 | |
| Quarter 3 | 15 | 0 | 7 | 0 | 22 | |
| Quarter 4 | 7 | 0 | 12 | 0 | 19 | |
| Year 2023 | Quarter 1 | 3 | 0 | 20 | 0 | 23 |
| Quarter 2 | 6 | 0 | 12 | 0 | 18 | |
| Quarter 3 | 9 | 0 | 15 | 0 | 24 | |
| Quarter 4 | 6 | 0 | 29 | 0 | 35 | |
| Year 2024 | Quarter 1 | 3 | 0 | 13 | 0 | 16 |
| Quarter 2 | 10 | 0 | 29 | 0 | 39 | |
| Quarter 3 | 7 | 0 | 24 | 0 | 31 | |
| Quarter 4 | 6 | 0 | 9 | 0 | 15 | |
| Total | 283 | 0 | 450 | 0 | 733 | |