Левенцов, Валерий Александрович. Финансы и инжиниринг: теория и практика [Электронный ресурс] / В.А. Левенцов, А.Н. Левенцов, И.Н. Крюков; Санкт-Петербургский государственный политехнический университет. — Электрон. текстовые дан. (1 файл: 6,08 Мб). — Санкт-Петербург, 2014. — Загл. с титул. экрана. — Электронная версия печатной публикации. — Свободный доступ из сети Интернет (чтение). — Текстовый документ. — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/3611.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2014 | Quarter 1 | 33 | 0 | 0 | 0 | 33 |
| Quarter 2 | 40 | 0 | 0 | 0 | 40 | |
| Quarter 3 | 26 | 0 | 0 | 0 | 26 | |
| Quarter 4 | 22 | 0 | 0 | 0 | 22 | |
| Year 2015 | Quarter 1 | 21 | 0 | 0 | 0 | 21 |
| Quarter 2 | 25 | 0 | 0 | 0 | 25 | |
| Quarter 3 | 21 | 0 | 0 | 0 | 21 | |
| Quarter 4 | 39 | 0 | 0 | 0 | 39 | |
| Year 2016 | Quarter 1 | 12 | 0 | 0 | 0 | 12 |
| Quarter 2 | 24 | 0 | 0 | 0 | 24 | |
| Quarter 3 | 7 | 0 | 0 | 0 | 7 | |
| Quarter 4 | 16 | 0 | 0 | 0 | 16 | |
| Year 2017 | Quarter 1 | 11 | 0 | 0 | 0 | 11 |
| Quarter 2 | 13 | 0 | 0 | 0 | 13 | |
| Quarter 3 | 9 | 0 | 0 | 0 | 9 | |
| Quarter 4 | 9 | 0 | 0 | 0 | 9 | |
| Year 2018 | Quarter 1 | 13 | 0 | 0 | 0 | 13 |
| Quarter 2 | 12 | 0 | 0 | 0 | 12 | |
| Quarter 3 | 9 | 0 | 0 | 0 | 9 | |
| Quarter 4 | 10 | 0 | 0 | 0 | 10 | |
| Year 2019 | Quarter 1 | 6 | 0 | 0 | 0 | 6 |
| Quarter 2 | 9 | 0 | 0 | 0 | 9 | |
| Quarter 3 | 6 | 0 | 0 | 0 | 6 | |
| Quarter 4 | 5 | 0 | 0 | 0 | 5 | |
| Year 2020 | Quarter 1 | 9 | 0 | 0 | 0 | 9 |
| Quarter 2 | 19 | 0 | 0 | 0 | 19 | |
| Quarter 3 | 11 | 0 | 0 | 0 | 11 | |
| Quarter 4 | 13 | 0 | 0 | 0 | 13 | |
| Year 2021 | Quarter 1 | 9 | 0 | 0 | 0 | 9 |
| Quarter 2 | 11 | 0 | 0 | 0 | 11 | |
| Quarter 3 | 8 | 0 | 0 | 0 | 8 | |
| Quarter 4 | 7 | 0 | 0 | 0 | 7 | |
| Year 2022 | Quarter 1 | 8 | 0 | 0 | 0 | 8 |
| Quarter 2 | 3 | 0 | 0 | 0 | 3 | |
| Quarter 3 | 12 | 0 | 0 | 0 | 12 | |
| Quarter 4 | 17 | 0 | 0 | 0 | 17 | |
| Year 2023 | Quarter 1 | 3 | 0 | 0 | 0 | 3 |
| Quarter 2 | 5 | 0 | 0 | 0 | 5 | |
| Quarter 3 | 8 | 0 | 0 | 0 | 8 | |
| Quarter 4 | 4 | 0 | 0 | 0 | 4 | |
| Year 2024 | Quarter 1 | 4 | 0 | 0 | 0 | 4 |
| Quarter 2 | 16 | 0 | 0 | 0 | 16 | |
| Quarter 3 | 10 | 0 | 0 | 0 | 10 | |
| Quarter 4 | 6 | 0 | 0 | 0 | 6 | |
| Year 2025 | Quarter 1 | 17 | 0 | 0 | 0 | 17 |
| Quarter 2 | 13 | 0 | 0 | 0 | 13 | |
| Quarter 3 | 29 | 0 | 0 | 0 | 29 | |
| Quarter 4 | 9 | 0 | 0 | 0 | 9 | |
| Total | 649 | 0 | 0 | 0 | 649 | |