[Docs] paper reference

Author: fedebotu

docs/content/general/paper.md

@@ -0,0 +1,15 @@
+## Paper Reference
+
+Our paper is available [here](https://arxiv.org/abs/2306.17100) for further details.
+
+If you find RL4CO valuable for your research or applied projects, don't forget to cite us! 🚀
+
+```bibtex
+@article{berto2024rl4co,
+    title={{RL4CO: an Extensive Reinforcement Learning for Combinatorial Optimization Benchmark}},
+    author={Federico Berto and Chuanbo Hua and Junyoung Park and Laurin Luttmann and Yining Ma and Fanchen Bu and Jiarui Wang and Haoran Ye and Minsu Kim and Sanghyeok Choi and Nayeli Gast Zepeda and Andr\'e Hottung and Jianan Zhou and Jieyi Bi and Yu Hu and Fei Liu and Hyeonah Kim and Jiwoo Son and Haeyeon Kim and Davide Angioni and Wouter Kool and Zhiguang Cao and Jie Zhang and Kijung Shin and Cathy Wu and Sungsoo Ahn and Guojie Song and Changhyun Kwon and Lin Xie and Jinkyoo Park},
+    year={2024},
+    journal={arXiv preprint arXiv:2306.17100},
+    note={\url{https://github.com/ai4co/rl4co}}
+}
+```

docs/content/intro/intro.md

@@ -32,3 +32,18 @@ We explore in other pages the following components:
 </div>
 
 
+## Paper Reference
+
+Our paper is available [here](https://arxiv.org/abs/2306.17100) for further details.
+
+If you find RL4CO valuable for your research or applied projects, don't forget to cite us! 🚀
+
+```bibtex
+@article{berto2024rl4co,
+    title={{RL4CO: an Extensive Reinforcement Learning for Combinatorial Optimization Benchmark}},
+    author={Federico Berto and Chuanbo Hua and Junyoung Park and Laurin Luttmann and Yining Ma and Fanchen Bu and Jiarui Wang and Haoran Ye and Minsu Kim and Sanghyeok Choi and Nayeli Gast Zepeda and Andr\'e Hottung and Jianan Zhou and Jieyi Bi and Yu Hu and Fei Liu and Hyeonah Kim and Jiwoo Son and Haeyeon Kim and Davide Angioni and Wouter Kool and Zhiguang Cao and Jie Zhang and Kijung Shin and Cathy Wu and Sungsoo Ahn and Guojie Song and Changhyun Kwon and Lin Xie and Jinkyoo Park},
+    year={2024},
+    journal={arXiv preprint arXiv:2306.17100},
+    note={\url{https://github.com/ai4co/rl4co}}
+}
+```

mkdocs.yml

@@ -65,6 +65,7 @@ nav:
   - About:
     - Contributing to RL4CO: docs/content/general/contribute.md
     - FAQ: docs/content/general/faq.md
+    - Paper and Citation: docs/content/general/paper.md
     - License and Usage: docs/content/general/licensing.md
     - Join AI4CO: docs/content/general/ai4co.md