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|portrait = Antonio_GuimaraesPortrait.jpg
|portrait = Antonio_GuimaraesPortrait.jpg
|caricature = Antonio_GuimaraesCaricature.jpg
|caricature = Antonio_GuimaraesCaricature.jpg
|affiliation= Anatel
|country = Brazil
|country = Brazil
|email =
|email =
}}
}}
'''Antônio (Celso) Guimaraes (Teixeira)''' is an Engineer at [[ANANTEL]]. He is also the Chairman of SG17.<ref>[http://www.secom.gob.ar/eventos/bicexpo/.%5CPresentaciones%5CMartes%2021%5C16%20a%2017%20hs%5CMr.%20Malcolm%20Johnson%20-ITU-T.pdf secom.gob.ar]</ref>
'''Antônio (Celso) Guimaraes (Teixeira)''' is an Engineer at Anatel. He is also the Chairman of SG17.<ref>[http://www.secom.gob.ar/eventos/bicexpo/.%5CPresentaciones%5CMartes%2021%5C16%20a%2017%20hs%5CMr.%20Malcolm%20Johnson%20-ITU-T.pdf secom.gob.ar]</ref>
He attended ICTs and Climate Change side event 2.<ref>[http://www.flickr.com/photos/malcolm_johnson/2980164819/ flickr.com]</ref><ref>[http://www.itu.int/ITU-T/wtsa-08/se/climatechange/index.html itu.int]</ref>
He attended ICTs and Climate Change side event 2.<ref>[http://www.flickr.com/photos/malcolm_johnson/2980164819/ flickr.com]</ref><ref>[http://www.itu.int/ITU-T/wtsa-08/se/climatechange/index.html itu.int]</ref>