Update file README.MD

README.MD

 RGS+: RDF Graph Synchronization for Collaborative Robotics
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-This repository includes the source code of the graph synchronization algorithm and the synchronization protocol presented in "RGS+: RDF Graph Synchronization for Collaborative Robotics" article submitted to  "Autonomous Agents and Multi-Agent Systems."
+This repository includes the source code of the graph synchronization algorithm and the synchronization protocol presented in:
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+Berger, C., Doherty, P., Rudol, P., Wzorek, M. RGS+: RDF graph synchronization for collaborative robotics. Auton Agent Multi-Agent Syst 37, 47 (2023). https://doi.org/10.1007/s10458-023-09629-2
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 The source code contained in this repository is released under the [GNU General Public License v3](https://www.gnu.org/licenses/gpl-3.0.html).