Update README.md

README.md

@@ -3,4 +3,16 @@ This repository accompanies Guo et al. [1], with the code of the focal track alg
 
 The file focaltrack.py contains the implementation of focaltrack algorithm. For details of end-to-end training, please refer to ./extra.
 
-For questions, please email [email protected]. 
+For questions, please email [email protected]. 
+
+You are welcome to use this code for your research projects, please cite the following paper should you publish your work:
+
+```
+@inproceedings{Guo2017focal,
+  title={Focal Track: Depth and Accommodation with Oscillating Lens Deformation.},
+  author={Guo, Qi and Alexander, Emma and Zickler, Todd E},
+  booktitle={ICCV},
+  pages={966--974},
+  year={2017}
+}
+```