Annual report 2005 [documento eletrónico] / National Regulatory Authority for Communications
EN 50470-3 [documento eletrónico] : electricity metering equipment (a.c.); : Part 3; : particular requirements - static meters for active energy (class indexes A, B and C) / European Committee for Electrotechnical Standardization
Radical evolution : the promise and peril of enhancing our minds, our bodies; : and what it means to be human / Joel Garreau