显示图书馆参考咨询联盟上文献的ssid号或dxid号（ssid不存在时），用于群组找书等场景；另外在搜索、详情页添加ucdrs和豆瓣的双向导航链接。
当前为
| 日期 | 安装次数 | 更新检查总次数 |
|---|---|---|
| 2025-12-08 | 7 | 1,769 |
| 2025-12-09 | 3 | 1,756 |
| 2025-12-10 | 6 | 1,723 |
| 2025-12-11 | 11 | 1,770 |
| 2025-12-12 | 5 | 1,763 |
| 2025-12-13 | 2 | 1,595 |
| 2025-12-14 | 3 | 1,555 |
| 2025-12-15 | 1 | 1,706 |
| 2025-12-16 | 7 | 1,743 |
| 2025-12-17 | 3 | 1,764 |
| 2025-12-18 | 6 | 1,759 |
| 2025-12-19 | 3 | 1,677 |
| 2025-12-20 | 8 | 1,562 |
| 2025-12-21 | 3 | 1,581 |
| 2025-12-22 | 2 | 1,771 |
| 2025-12-23 | 5 | 1,789 |
| 2025-12-24 | 4 | 1,776 |
| 2025-12-25 | 2 | 1,766 |
| 2025-12-26 | 0 | 1,673 |
| 2025-12-27 | 7 | 1,542 |
| 2025-12-28 | 6 | 1,554 |
| 2025-12-29 | 4 | 1,694 |
| 2025-12-30 | 4 | 1,630 |
| 2025-12-31 | 3 | 1,528 |
| 2026-01-01 | 1 | 1,322 |
| 2026-01-02 | 5 | 1,392 |
| 2026-01-03 | 5 | 1,442 |
| 2026-01-04 | 5 | 1,691 |
| 2026-01-05 | 9 | 1,724 |
| 2026-01-06 | 11 | 1,379 |
