Inovação e desenvolvimento de novos produtos : técnicas e métodos de apoio à concepção / António Ramos Pires
Digital mobile communications and the TETRA system / John Dunlop, Demessie Girma and James Irvine
Understanding digital subscriber line technology / Thomas Starr, John M. Cioffi and Peter Silverman
Worldwide approvals99 : London, 22nd-24th November 1999 / org. IBC
Standardization : a business approach to the role of national standardization organizations / Henk J. De Vries