Тогола, Ибрахим. Использование солнечной энергии для обеспечения водоснабжения сельскохозяйственных районов Западной Африки [Электронный ресурс]: Автореф. дис... канд. техн. наук:05.14.08 / И. Тогола; Санкт-Петербургский государственный политехнический университет. — Электрон. текстовые дан. (1 файл : 718 Кб). — 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/538.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 1 | 2 | 0 | 2 | 0 | 4 |
| Quarter 2 | 7 | 0 | 3 | 0 | 10 | |
| Quarter 3 | 3 | 0 | 5 | 0 | 8 | |
| Quarter 4 | 5 | 0 | 8 | 0 | 13 | |
| Year 2013 | Quarter 1 | 2 | 0 | 0 | 0 | 2 |
| Quarter 2 | 11 | 0 | 1 | 0 | 12 | |
| Quarter 3 | 19 | 0 | 4 | 0 | 23 | |
| Quarter 4 | 9 | 0 | 1 | 0 | 10 | |
| Year 2014 | Quarter 1 | 12 | 0 | 1 | 0 | 13 |
| Quarter 2 | 8 | 0 | 3 | 0 | 11 | |
| Quarter 3 | 11 | 0 | 5 | 0 | 16 | |
| Quarter 4 | 9 | 0 | 5 | 0 | 14 | |
| Year 2015 | Quarter 1 | 7 | 0 | 4 | 0 | 11 |
| Quarter 2 | 13 | 0 | 8 | 0 | 21 | |
| Quarter 3 | 11 | 0 | 6 | 0 | 17 | |
| Quarter 4 | 24 | 0 | 7 | 0 | 31 | |
| Year 2016 | Quarter 1 | 11 | 0 | 2 | 0 | 13 |
| Quarter 2 | 19 | 0 | 13 | 0 | 32 | |
| Quarter 3 | 6 | 0 | 1 | 0 | 7 | |
| Quarter 4 | 5 | 0 | 7 | 0 | 12 | |
| Year 2017 | Quarter 1 | 15 | 0 | 11 | 0 | 26 |
| Quarter 2 | 9 | 0 | 26 | 0 | 35 | |
| Quarter 3 | 7 | 0 | 28 | 0 | 35 | |
| Quarter 4 | 14 | 0 | 23 | 0 | 37 | |
| Year 2018 | Quarter 1 | 6 | 0 | 26 | 0 | 32 |
| Quarter 2 | 7 | 0 | 43 | 0 | 50 | |
| Quarter 3 | 6 | 0 | 60 | 0 | 66 | |
| Quarter 4 | 3 | 0 | 32 | 0 | 35 | |
| Year 2019 | Quarter 1 | 4 | 0 | 7 | 0 | 11 |
| Quarter 2 | 6 | 0 | 19 | 0 | 25 | |
| Quarter 3 | 14 | 0 | 10 | 0 | 24 | |
| Quarter 4 | 1 | 0 | 17 | 0 | 18 | |
| Year 2020 | Quarter 1 | 12 | 0 | 13 | 0 | 25 |
| Quarter 2 | 13 | 0 | 1 | 0 | 14 | |
| Quarter 3 | 22 | 0 | 0 | 0 | 22 | |
| Quarter 4 | 11 | 0 | 13 | 0 | 24 | |
| Year 2021 | Quarter 1 | 13 | 0 | 11 | 0 | 24 |
| Quarter 2 | 9 | 0 | 12 | 0 | 21 | |
| Quarter 3 | 7 | 0 | 7 | 0 | 14 | |
| Quarter 4 | 5 | 0 | 9 | 0 | 14 | |
| Year 2022 | Quarter 1 | 6 | 0 | 12 | 0 | 18 |
| Quarter 2 | 8 | 0 | 13 | 0 | 21 | |
| Quarter 3 | 3 | 0 | 8 | 0 | 11 | |
| Quarter 4 | 17 | 0 | 8 | 0 | 25 | |
| Year 2023 | Quarter 1 | 7 | 0 | 14 | 0 | 21 |
| Quarter 2 | 7 | 0 | 10 | 0 | 17 | |
| Quarter 3 | 2 | 0 | 20 | 0 | 22 | |
| Quarter 4 | 5 | 0 | 9 | 0 | 14 | |
| Year 2024 | Quarter 1 | 7 | 0 | 15 | 0 | 22 |
| Quarter 2 | 11 | 0 | 27 | 0 | 38 | |
| Quarter 3 | 7 | 0 | 13 | 0 | 20 | |
| Total | 458 | 0 | 603 | 0 | 1,061 | |