Comércio electrónico na Internet / Miguel Mira da Silva...[et al.]
Handbook of usability testing : how to plan, design, and conduct effective tests / Jeffrey Rubin and Dana Chisnell; foreword by Jared Spool
Understanding digital terrestrial broadcasting / Seamus O'Leary
Contra-ordenações : anotações ao regime geral / Manuel Simas Santos, Jorge Lopes de Sousa