@conference {IIIA-2002-571, title = {A Bartering Approach to Improve Multiagent Learning}, booktitle = {Proceedings of The First International Joint Conference on Autonomous Agents And Multiagents Systems AAMAS{\textquoteright}02, july 15-19, 2002 Palazzo Re Enzo Bologna, Italy}, volume = {1}, year = {2002}, pages = {386{\textendash}393}, publisher = {ACM, Press}, organization = {ACM, Press}, author = {Santiago Onta{\~n}{\'o}n and Enric Plaza}, editor = {C. Castellfranchi and W. L. Johnson} }