Update README.md

Author: pradeeban

README.md

@@ -10,3 +10,10 @@ concore is a lightweight Python-based protocol to simulate neuromodulation contr
 # Using _concore_
 
 Usage instructions can be found [here](https://control-core.readthedocs.io/en/latest/usage.html).
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+# Citing _concore_
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+If you use _concore_ in your research, please cite the below papers:
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+* Kathiravelu, P., Arnold, M., Fleischer, J., Yao, Y., Awasthi, S., Goel, A. K., Branen, A., Sarikhani, P., Kumar, G., Kothare, M. and Mahmoudi, B. **CONTROL-CORE: A Framework for Simulation and Design of Closed-Loop Peripheral Neuromodulation Control Systems**. In IEEE Access. Accepted. March 2022.