Update main.py

main.py

@@ -9,11 +9,15 @@ app = FastAPI()
 BASE_URL = 'https://doi.org/'
 
 @app.get("/title2ref/")
-async def ttile2doi(title:str):
+async def title2doi(title:str):
     cr = Crossref()
 
-    result = cr.works(query = "title")
-    doi = result['message']['items'][0]['DOI']
+    result = cr.works(query = title)
+    for i, item in enumerate(result['message']['items']):
+        if 'group-title' in item and item['group-title'] != 'Preprints':
+            doi = result['message']['items'][i-1]['DOI']
+            break
+    
     url = BASE_URL + doi
     req = urllib.request.Request(url)
     req.add_header('Accept', 'application/x-bibtex')