Ляпунова, Наталия Михайловна. Специальные вопросы радиоэлектроники. Диодные преобразователи частоты [Электронный ресурс]: [учебное пособие] / Н.М. Ляпунова; Санкт-Петербургский государственный политехнический университет. — Электрон. текстовые дан. (1 файл: 518 Кб). — Санкт-Петербург, 2013. — Загл. с титул. экрана. — Доступ по паролю из сети Интернет (чтение, печать, копирование). — Текстовый документ. — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/3244.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2013 | Quarter 3 | 2 | 0 | 1 | 0 | 3 |
| Quarter 4 | 1 | 0 | 2 | 0 | 3 | |
| Year 2014 | Quarter 1 | 1 | 0 | 1 | 0 | 2 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 1 | 0 | 1 | |
| Quarter 4 | 0 | 0 | 1 | 0 | 1 | |
| Year 2015 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 1 | 0 | 1 | 0 | 2 | |
| Year 2016 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 1 | 0 | 1 | |
| Quarter 4 | 0 | 0 | 1 | 0 | 1 | |
| Year 2017 | Quarter 1 | 0 | 0 | 1 | 0 | 1 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| 2018 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Year 2019 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 2 | 0 | 2 | |
| Year 2020 | Quarter 1 | 0 | 0 | 3 | 0 | 3 |
| Quarter 2 | 0 | 0 | 1 | 0 | 1 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Year 2021 | Quarter 1 | 1 | 1 | 0 | 0 | 2 |
| Quarter 2 | 1 | 0 | 0 | 0 | 1 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Year 2022 | Quarter 1 | 2 | 1 | 2 | 0 | 5 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 1 | 0 | 0 | 0 | 1 | |
| Quarter 4 | 2 | 0 | 1 | 0 | 3 | |
| Year 2023 | Quarter 1 | 1 | 0 | 0 | 0 | 1 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| 2024 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Year 2025 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 1 | 0 | 0 | 0 | 1 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Total | 14 | 2 | 19 | 0 | 35 | |