Update app.py

app.py

@@ -37,6 +37,10 @@ def conv_txt(extype):
     col_dict = {'TI': 'Title',
             'SO': 'Source title',
             'DE': 'Author Keywords',
+            'DT': 'Document Type',
+            'AB': 'Abstract',
+            'TC': 'Cited by',
+            'PY': 'Year',
             'ID': 'Keywords Plus'}
     keywords = pd.read_csv(uploaded_file, sep='\t', lineterminator='\r')
     keywords.rename(columns=col_dict, inplace=True)