+The power model is taken from the paper `"Reinforcement Learning Based Load Balancing for
+Geographically Distributed Data Centres" <https://dro.dur.ac.uk/33395/1/33395.pdf?DDD280+kkgc95+vbdv77>`_ by Max Mackie et. al.
+
+The cost model is taken from the chapter 4 of the thesis `Sizing and Operation of Multi-Energy Hydrogen-Based
+Microgrids <https://tel.archives-ouvertes.fr/tel-02077668/document>`_ by Bei Li.
+