Contacts:

Pedro U. Lima

Institute for Systems and Robotics
Instituto Superior Técnico
Av. Rovisco Pais 1
1049-001 Lisboa, Portugal
E-mail: pal (@) isr . ist . utl . pt

Nikos Vlassis

Intelligent Systems & Robotics Laboratory
Department of Production Engineering & Management
Technical University of Crete
Kounoupidiana
73100 Chania, Greece
E-mail: vlassis (@) dpem . tuc . gr

Matthijs T.J. Spaan

Institute for Systems and Robotics
Instituto Superior Técnico
Av. Rovisco Pais 1
1049-001 Lisboa, Portugal
E-mail: mtjspaan (@) isr . ist . utl . pt

Francisco S. Melo

School of Computer Science
Carnegie Mellon University
5000 Forbes Avenue
Pittsburgh, PA 15213, USA
E-mail: fmelo (@) cs . cmu . edu