diff --git a/references.bib b/references.bib
index 43976b0..a9fe839 100644
--- a/references.bib
+++ b/references.bib
@@ -1,16 +1,10 @@
-@article{Brockman2016,
-author = {Brockman, Greg and Cheung, Vicki and Pettersson, Ludwig and Schneider, Jonas and Schulman, John and Tang, Jie and Zaremba, Wojciech},
-journal = {https://arxiv.org/abs/1606.01540},
-month = {jun},
-pages = {1--4},
-title = {{OpenAI Gym}},
-url = {https://arxiv.org/abs/1606.01540 http://arxiv.org/abs/1606.01540},
-year = {2016}
-}
-
-@book{sutton2018reinforcement,
-	title={Reinforcement learning: An introduction},
-	author={Sutton, Richard S and Barto, Andrew G},
-	year={2018},
-	publisher={MIT press}
+@ARTICLE{Prolog-Scripted2016,
+	  author={Jaśkiewicz, Grzegorz},
+	  journal={IEEE Transactions on Computational Intelligence and AI in Games}, 
+	  title={Prolog-Scripted Tactics Negotiation and Coordinated Team Actions for Counter-Strike Game Bots}, 
+	  year={2016},
+	  volume={8},
+	  number={1},
+	  pages={82-88},
+	  doi={10.1109/TCIAIG.2014.2331972}
 }