@article {369,
	title = {Hierarchical multiagent reinforcement learning schemes for air traffic management},
	journal = {Neural Computing and Applications},
	year = {2021},
	doi = {10.1007/s00521-021-05748-7},
	url = {http://link.springer.com/article/10.1007/s00521-021-05748-7},
	author = {Christos Spatharis and Alevizos Bastas and Theocharis Kravaris and George A. Vouros and Konstantinos Blekas and Jose Manuel Cordero Garcia}
}
