Академик Дмитрий Сергеевич Лихачев [Электронный ресурс]: [сайт] / Международный благотворительный фонд имени Д.С.Лихачева. — Электрон. дан. — [СПб.], [2006]. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (печать, копирование). — Internet Explorer 6.0. — <URL:http://likhachev.lfond.spb.ru/dates_1906_1937.htm>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2012 | Quarter 4 | 0 | 0 | 0 | 1 | 1 |
| Year 2013 | Quarter 1 | 0 | 0 | 0 | 5 | 5 |
| Quarter 2 | 0 | 0 | 0 | 3 | 3 | |
| Quarter 3 | 0 | 0 | 0 | 2 | 2 | |
| Quarter 4 | 0 | 0 | 0 | 1 | 1 | |
| Year 2014 | Quarter 1 | 0 | 0 | 0 | 1 | 1 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 3 | 3 | |
| Year 2015 | Quarter 1 | 0 | 0 | 0 | 1 | 1 |
| Quarter 2 | 0 | 0 | 0 | 3 | 3 | |
| Quarter 3 | 0 | 0 | 0 | 3 | 3 | |
| Quarter 4 | 0 | 0 | 0 | 3 | 3 | |
| Year 2016 | Quarter 1 | 0 | 0 | 0 | 5 | 5 |
| Quarter 2 | 0 | 0 | 0 | 4 | 4 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 5 | 5 | |
| Year 2017 | Quarter 1 | 0 | 0 | 0 | 3 | 3 |
| Quarter 2 | 0 | 0 | 0 | 21 | 21 | |
| 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 | |
| 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 | 0 | 0 | 0 | |
| 2020 | 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 2021 | Quarter 1 | 0 | 0 | 0 | 1 | 1 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 1 | 1 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Year 2022 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 2 | 2 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Year 2023 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 3 | 3 | |
| Quarter 3 | 0 | 0 | 0 | 13 | 13 | |
| Quarter 4 | 0 | 0 | 0 | 1 | 1 | |
| Year 2024 | Quarter 1 | 0 | 0 | 0 | 2 | 2 |
| Quarter 2 | 0 | 0 | 0 | 2 | 2 | |
| Quarter 3 | 0 | 0 | 0 | 3 | 3 | |
| Quarter 4 | 0 | 0 | 0 | 3 | 3 | |
| Year 2025 | Quarter 1 | 0 | 0 | 0 | 2 | 2 |
| Quarter 2 | 0 | 0 | 0 | 1 | 1 | |
| Quarter 3 | 0 | 0 | 0 | 11 | 11 | |
| Quarter 4 | 0 | 0 | 0 | 21 | 21 | |
| Year 2026 | Quarter 1 | 0 | 0 | 0 | 18 | 18 |
| Total | 0 | 0 | 0 | 148 | 148 | |