Understanding cryptography? : a textbook for students and practitioners / Christof Paar, Jan Pelzl
Annual Report 2009 [documento eletrónico] : smart thinking smart living / ed. Ericsson
Annual report 2009 [documento eletrónico] / National Authority for Management and Regulation in Communications of Romania
Sobre a prescrição da obrigação tributária : notas práticas / Jorge Lopes de Sousa