Update README.md

README.md

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 # nf-reinforce
-Neurofeedback examples
+![Unity Version](https://img.shields.io/badge/Unity-2018.1.0f2-orange.svg)
+![OV Version](https://img.shields.io/badge/OpenVibe-3.0.0-blue.svg)
+
+## Publications
+```
+@inproceedings{bucho2019comparison,
+  title={Comparison of Visual and Auditory Modalities for Upper-Alpha EEG-Neurofeedback},
+  author={Bucho, Teresa and Caetano, Gina and Vourvopoulos, Athanasios and Accoto, Floriana and Esteves, In{\^e}s and i Badia, Sergi Berm{\'u}dez and Rosa, Agostinho and Figueiredo, Patr{\'\i}cia},
+  booktitle={2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)},
+  pages={5960--5966},
+  year={2019},
+  organization={IEEE}
+}
+```