Куликов, Кирилл Геннадьевич. Уравнения и методы математической физики [Электронный ресурс]: учебное пособие. Ч. 1. Классические модели / К. Г. Куликов, А. Н. Фирсов; Санкт-Петербургский государственный политехнический университет. — Электрон. текстовые дан. (1 файл : 2,75 Мб). — СПб., 2009. — 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/1770.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 1 | 3 | 0 | 2 | 0 | 5 |
| Quarter 2 | 8 | 0 | 5 | 0 | 13 | |
| Quarter 3 | 4 | 0 | 4 | 0 | 8 | |
| Quarter 4 | 9 | 0 | 6 | 0 | 15 | |
| Year 2013 | Quarter 1 | 5 | 0 | 3 | 0 | 8 |
| Quarter 2 | 69 | 0 | 26 | 0 | 95 | |
| Quarter 3 | 54 | 0 | 25 | 0 | 79 | |
| Quarter 4 | 40 | 0 | 16 | 0 | 56 | |
| Year 2014 | Quarter 1 | 53 | 0 | 20 | 0 | 73 |
| Quarter 2 | 65 | 0 | 22 | 0 | 87 | |
| Quarter 3 | 52 | 0 | 17 | 0 | 69 | |
| Quarter 4 | 61 | 0 | 32 | 0 | 93 | |
| Year 2015 | Quarter 1 | 63 | 0 | 24 | 0 | 87 |
| Quarter 2 | 73 | 0 | 27 | 0 | 100 | |
| Quarter 3 | 67 | 0 | 29 | 0 | 96 | |
| Quarter 4 | 103 | 1 | 28 | 0 | 132 | |
| Year 2016 | Quarter 1 | 84 | 0 | 29 | 0 | 113 |
| Quarter 2 | 112 | 4 | 40 | 0 | 156 | |
| Quarter 3 | 77 | 0 | 22 | 0 | 99 | |
| Quarter 4 | 68 | 0 | 24 | 0 | 92 | |
| Year 2017 | Quarter 1 | 30 | 0 | 28 | 0 | 58 |
| Quarter 2 | 28 | 0 | 58 | 0 | 86 | |
| Quarter 3 | 58 | 0 | 124 | 0 | 182 | |
| Quarter 4 | 81 | 0 | 174 | 0 | 255 | |
| Year 2018 | Quarter 1 | 145 | 0 | 193 | 0 | 338 |
| Quarter 2 | 77 | 0 | 202 | 0 | 279 | |
| Quarter 3 | 44 | 0 | 47 | 0 | 91 | |
| Quarter 4 | 68 | 0 | 50 | 0 | 118 | |
| Year 2019 | Quarter 1 | 36 | 0 | 48 | 0 | 84 |
| Quarter 2 | 48 | 0 | 80 | 0 | 128 | |
| Quarter 3 | 42 | 0 | 45 | 0 | 87 | |
| Quarter 4 | 37 | 0 | 172 | 0 | 209 | |
| Year 2020 | Quarter 1 | 21 | 0 | 59 | 0 | 80 |
| Quarter 2 | 42 | 0 | 5 | 0 | 47 | |
| Quarter 3 | 30 | 0 | 5 | 0 | 35 | |
| Quarter 4 | 63 | 0 | 55 | 0 | 118 | |
| Year 2021 | Quarter 1 | 34 | 0 | 151 | 0 | 185 |
| Quarter 2 | 40 | 1 | 193 | 0 | 234 | |
| Quarter 3 | 23 | 0 | 233 | 0 | 256 | |
| Quarter 4 | 52 | 0 | 665 | 0 | 717 | |
| Year 2022 | Quarter 1 | 55 | 0 | 893 | 0 | 948 |
| Quarter 2 | 38 | 0 | 632 | 0 | 670 | |
| Quarter 3 | 43 | 0 | 419 | 0 | 462 | |
| Quarter 4 | 43 | 0 | 613 | 0 | 656 | |
| Year 2023 | Quarter 1 | 41 | 0 | 502 | 0 | 543 |
| Quarter 2 | 28 | 0 | 365 | 0 | 393 | |
| Quarter 3 | 14 | 0 | 311 | 0 | 325 | |
| Quarter 4 | 22 | 0 | 241 | 0 | 263 | |
| Year 2024 | Quarter 1 | 9 | 0 | 304 | 0 | 313 |
| Quarter 2 | 25 | 0 | 488 | 0 | 513 | |
| Quarter 3 | 15 | 0 | 203 | 0 | 218 | |
| Total | 2,402 | 6 | 7,959 | 0 | 10,367 | |