Koen Bertels
QBee, and University of Porto, Faculty of Engineering, Porto, Portugal

Ariel Guerreiro
University of Porto, Faculty of Science, Porto, Portugal 

Inês Dutra
University of Porto, Faculty of Science, Porto, Portugal

João M.P. Cardoso
University of Porto, Faculty of Engineering, Porto, Portugal

João Paulo Fernandes
University of Porto, Faculty of Engineering, Porto, Portugal

José Abilio Matos
University of Porto, Faculty of Economy, Porto, Portugal

José Ricardo Barboza University of Porto, Faculty of Engineering, Porto, Portugal

Paulo de Castro Aguiar
INEB, i3S, University of Porto, Porto, Portugal

Pedro C. Diniz
INESC ID, Lisboa, Portugal

Rui Maranhão
University of Porto, Faculty of Engineering, Porto, Portugal