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J. V. Gomes,
P. Monteiro,
J. Santos,
P. R. M. I. Inácio,
J. J. O. Pires,
Upstream Efficiency Improvement Method for Passive Optical Networks,
PCT/EP2008/060020,
PCT,
30-07-2008
D. Fonseca,
A. Cartaxo,
P. Monteiro,
An apparatus and method for generating an optical sing band signal,
PCT/EP2006/050035,
PCT,
20-01-2005
