IP telephony : exploiting market opportunities / Peter Hall
O mercado das TMT's em Portugal / ed. Reportium XXI Consulting; coord. Rui Arnaldo Rosa Pires, João Maria de Oliveira Martins
O mercado das TMT's em Portugal / ed. Reportium XXI Consulting; coord. Rui Arnaldo Rosa Pires; colab. João Maria de Oliveira Martins
Ovum evaluates : enterprise development studios / Ovum