Add reference

app.py

@@ -79,11 +79,14 @@ with gr.Blocks(css=css) as demo:
                 txt_item = gr.Textbox(label="Sample no.", min_width= 20)
                 txt_filename = gr.Textbox(label="SewerML file", min_width= 20)
                 txt_defect_class = gr.Textbox(label="Defect class", interactive=False, min_width= 150)
-            txt_xie_pred = gr.Textbox(label="Predictions (XIE = benchmark, 0 = No Defect, 1 = Defect)", min_width= 300, interactive=False)
+            txt_xie_pred = gr.Textbox(label="Predictions (XIE = benchmark*, 0 = No Defect, 1 = Defect)", min_width= 300, interactive=False)
             with gr.Row():
                 prev_btn = gr.Button("Previous")            
                 next_btn = gr.Button("Next")    
-                rand_btn = gr.Button("Random")            
+                rand_btn = gr.Button("Random") 
+            with gr.Row():
+                gr.Markdown('*Xie, Qian, et al. "Automatic detection and classification of sewer defects via hierarchical deep learning." IEEE Transactions on Automation Science and Engineering 16.4 (2019): 1836-1847.')
+                
         with gr.Column(scale=1):
             gr.Markdown('Multimodal descriptions')
             with gr.Row():