### 2.3. Details about an author's papers `GET /graph/v1/author/{author_id}/papers`

返回作者的论文列表。

| 参数 | 必填 | 说明 |
|---|---|---|
| `author_id` | 是 | 写法同 2.2 |
| `offset` / `limit` | 否 | `limit` 默认 100、上限 1000 |
| `fields` | 否 | 逗号分隔的字段投影，见 §3 |
| `publicationDateOrYear` | 否 | 按发表年份/日期过滤 |

```bash
curl "https://fetchpaper.com/graph/v1/author/40348417/papers?limit=2&fields=title,year,citationCount,venue"
```

```json
{"offset": 0, "next": 2,
 "data": [{"paperId": "204e3073870fae3d05bcbc2f6a8e263d9b72e776",
           "title": "Attention is All you Need", "year": 2017, "citationCount": 201069,
           "venue": "Neural Information Processing Systems"}, …]}
```

只认 `limit` / `offset` / `fields` / `publicationDateOrYear`，其它参数静默忽略、连值都不校验（实测 `year=abc` 照样 200）：`year` / `venue` / `publicationTypes` / `minCitationCount` / `sort` 都不生效。按年筛用 `publicationDateOrYear`；返回顺序本来就是 `citationCount` 降序、同引用数按入库顺序升序。