add bibtex citation

README.md

@@ -25,5 +25,9 @@ Our GitHub repository: https://github.com/sag111/COVID-19-tweets-Russia
 If you have found our results helpful in your work, feel free to cite our publication and this repository as:
 
 ```
-coming soon
+@article{sboev2021russian,
+  title={The Russian language corpus and a neural network to analyse Internet tweet reports about Covid-19},
+  author={Sboev, Alexander and Moloshnikov, Ivan and Naumov, Alexander and Levochkina𝑎, Anastasia and Rybka𝑎, Roman},
+  year={2021}
+}
 ```