@article {giannopoulos2021deep,
	title = {Deep reinforcement learning for energy-efficient multi-channel transmissions in 5G cognitive hetnets: Centralized, decentralized and transfer learning based solutions},
	journal = {IEEE Access},
	volume = {9},
	year = {2021},
	pages = {129358{\textendash}129374},
	publisher = {IEEE},
	author = {Giannopoulos, Anastasios and Spantideas, Sotirios and Kapsalis, Nikolaos and Panagiotis Karkazis and Trakadas, Panagiotis}
}
