Zambiasi, S., & 		Rabelo, R.
(2010).
 A Reference Architecture for Personal Assistants: An Agent-Based Approach with Software Services.
In <em>Proceedings of the 4th Workshop-School on Agents, Environments, and Applications</em>, (pp. 111-122). Porto Alegre: SBC.
doi:10.5753/wesaac.2010.33058