add references

app.py

@@ -69,5 +69,9 @@ if style_image and content_image is not None:
 
 # scroll down to see the references
 st.markdown("**References**")
+
+st.markdown("<a href='https://arxiv.org/abs/1705.06830' target='_blank'>Exploring the structure of a real-time, arbitrary neural artistic stylization network</a>", unsafe_allow_html=True)
+
 st.markdown("<a href='https://www.tensorflow.org/hub/tutorials/tf2_arbitrary_image_stylization' target='_blank'>1. Tutorial to implement Fast Neural Style Transfer using the pretrained model from TensorFlow Hub</a>  \n", unsafe_allow_html=True)
+
 st.markdown("<a href='https://huggingface.co/spaces/luca-martial/neural-style-transfer' target='_blank'>2. The idea to build a neural style transfer application was inspired from this Hugging Face Space </a>", unsafe_allow_html=True)