@inproceedings { santos17,
	booktitle = {Workshop Adaptive Learning Agents (ALA'17) at AAMAS 2017},
	keywords = {Miscellaneous;Game Theory;Multi-Agent Societies;},
	title = {Indirect reciprocity in populations of explorative agents},
	year = {2017},
	author = {Fernando P. Santos and Jorge M. Pacheco and Francisco C. Santos}
}