Цирлов, В.Л. Методология построения систем дистанционного обучения [Электронный ресурс] / В.Л. Цирлов. — (Секция1 "Наукоемкие технологии образования (интеграционные, информационные и телекоммуникационные)"). — Электрон. текстовые дан. (1 файл : 127 Кб) // Материалы...28 февраля - 1 марта 2003 г. [Электронный ресурс] / Санкт-Петербургский государственный политехнический университет; Международная академия наук высшей школы. – Санкт-Петербург, 2003. — Загл. с титул. экрана. — Электрон. версия печ. публикации. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Adobe Acrobat Reader 4.0. — <URL:http://elib.spbstu.ru/dl/001896.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 1 | 3 | 0 | 1 | 0 | 4 |
| Quarter 2 | 5 | 0 | 3 | 0 | 8 | |
| Quarter 3 | 5 | 0 | 0 | 0 | 5 | |
| Quarter 4 | 5 | 0 | 7 | 0 | 12 | |
| Year 2013 | Quarter 1 | 2 | 0 | 1 | 0 | 3 |
| Quarter 2 | 7 | 0 | 4 | 0 | 11 | |
| Quarter 3 | 5 | 0 | 1 | 0 | 6 | |
| Quarter 4 | 4 | 0 | 0 | 0 | 4 | |
| Year 2014 | Quarter 1 | 1 | 0 | 2 | 0 | 3 |
| Quarter 2 | 5 | 0 | 1 | 0 | 6 | |
| Quarter 3 | 7 | 0 | 2 | 0 | 9 | |
| Quarter 4 | 11 | 0 | 11 | 0 | 22 | |
| Year 2015 | Quarter 1 | 8 | 0 | 2 | 0 | 10 |
| Quarter 2 | 11 | 0 | 7 | 0 | 18 | |
| Quarter 3 | 12 | 0 | 8 | 0 | 20 | |
| Quarter 4 | 12 | 0 | 7 | 0 | 19 | |
| Year 2016 | Quarter 1 | 13 | 0 | 5 | 0 | 18 |
| Quarter 2 | 17 | 0 | 8 | 0 | 25 | |
| Quarter 3 | 8 | 0 | 0 | 0 | 8 | |
| Quarter 4 | 20 | 0 | 4 | 0 | 24 | |
| Year 2017 | Quarter 1 | 12 | 0 | 1 | 0 | 13 |
| Quarter 2 | 6 | 0 | 7 | 0 | 13 | |
| Quarter 3 | 10 | 0 | 10 | 0 | 20 | |
| Quarter 4 | 15 | 0 | 7 | 0 | 22 | |
| Year 2018 | Quarter 1 | 10 | 0 | 10 | 0 | 20 |
| Quarter 2 | 8 | 0 | 5 | 0 | 13 | |
| Quarter 3 | 9 | 0 | 13 | 0 | 22 | |
| Quarter 4 | 5 | 0 | 6 | 0 | 11 | |
| Year 2019 | Quarter 1 | 9 | 0 | 5 | 0 | 14 |
| Quarter 2 | 8 | 0 | 5 | 0 | 13 | |
| Quarter 3 | 6 | 0 | 4 | 0 | 10 | |
| Quarter 4 | 5 | 0 | 3 | 0 | 8 | |
| Year 2020 | Quarter 1 | 7 | 0 | 5 | 0 | 12 |
| Quarter 2 | 8 | 0 | 0 | 0 | 8 | |
| Quarter 3 | 7 | 0 | 0 | 0 | 7 | |
| Quarter 4 | 11 | 0 | 7 | 0 | 18 | |
| Year 2021 | Quarter 1 | 9 | 0 | 8 | 0 | 17 |
| Quarter 2 | 16 | 0 | 9 | 0 | 25 | |
| Quarter 3 | 17 | 0 | 18 | 0 | 35 | |
| Quarter 4 | 10 | 0 | 8 | 0 | 18 | |
| Year 2022 | Quarter 1 | 17 | 0 | 11 | 0 | 28 |
| Quarter 2 | 4 | 0 | 6 | 0 | 10 | |
| Quarter 3 | 15 | 0 | 6 | 0 | 21 | |
| Quarter 4 | 19 | 0 | 7 | 0 | 26 | |
| Year 2023 | Quarter 1 | 21 | 0 | 9 | 0 | 30 |
| Quarter 2 | 8 | 0 | 5 | 0 | 13 | |
| Quarter 3 | 5 | 0 | 7 | 0 | 12 | |
| Quarter 4 | 11 | 0 | 9 | 0 | 20 | |
| Year 2024 | Quarter 1 | 16 | 0 | 14 | 0 | 30 |
| Quarter 2 | 13 | 0 | 23 | 0 | 36 | |
| Quarter 3 | 19 | 0 | 20 | 0 | 39 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Total | 497 | 0 | 322 | 0 | 819 | |