David Camacho Daniel Borrajo José M. Molina Intelligent Travel Planning: A MultiAgent Planning System to Solve Web Problems in the e-Tourism Domain. 387-392 2001 4 Autonomous Agents and Multi-Agent Systems 4 db/journals/aamas/aamas4.html#CamachoBM01 http://dx.doi.org/10.1023/A:1012767210241