Специальная педагогика: Альтернативная (дополнительная) коммуникация [Электронный ресурс]: тематический список для специалистов / СПб ГСЦБС ; Информационный отдел по специальной педагогике и психологии ; сост. Е.А. Петрова. — СПб.: СПб ГСЦБС, 2020. — обновлено 25.05.2020. — Свободный доступ к коллекциям. — 0,6 МБ. — Adobe Acrobat Reader 4.0. — <URL:http://tlib.gbs.spb.ru/dl/collections/9/2020_rdef_AAC-sp.pdf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2020 | Quarter 2 | 0 | 0 | 49 | 0 | 49 |
| Quarter 3 | 0 | 0 | 39 | 0 | 39 | |
| Quarter 4 | 0 | 0 | 51 | 0 | 51 | |
| Year 2021 | Quarter 1 | 0 | 0 | 79 | 0 | 79 |
| Quarter 2 | 0 | 0 | 51 | 0 | 51 | |
| Quarter 3 | 0 | 0 | 51 | 0 | 51 | |
| Quarter 4 | 0 | 0 | 75 | 0 | 75 | |
| Year 2022 | Quarter 1 | 0 | 0 | 83 | 0 | 83 |
| Quarter 2 | 0 | 0 | 95 | 0 | 95 | |
| Quarter 3 | 0 | 0 | 98 | 0 | 98 | |
| Quarter 4 | 0 | 0 | 91 | 0 | 91 | |
| Year 2023 | Quarter 1 | 0 | 0 | 142 | 0 | 142 |
| Quarter 2 | 0 | 0 | 109 | 0 | 109 | |
| Quarter 3 | 0 | 0 | 90 | 0 | 90 | |
| Quarter 4 | 0 | 0 | 100 | 21 | 121 | |
| Year 2024 | Quarter 1 | 0 | 0 | 104 | 1 | 105 |
| Quarter 2 | 0 | 0 | 149 | 8 | 157 | |
| Quarter 3 | 0 | 0 | 99 | 9 | 108 | |
| Quarter 4 | 0 | 0 | 156 | 0 | 156 | |
| Year 2025 | Quarter 1 | 0 | 0 | 161 | 0 | 161 |
| Quarter 2 | 0 | 0 | 181 | 0 | 181 | |
| Quarter 3 | 0 | 0 | 133 | 0 | 133 | |
| Quarter 4 | 0 | 0 | 273 | 0 | 273 | |
| Year 2026 | Quarter 1 | 0 | 0 | 253 | 0 | 253 |
| Quarter 2 | 0 | 0 | 214 | 0 | 214 | |
| Total | 0 | 0 | 2,926 | 39 | 2,965 | |