1. 
   Estremenho
   (from the article `Romance languages`) There are five main Portuguese dialect groups, all mutually intelligible: (1) Northern, or Galician, (2) Central, or Beira, (3) Southern (Estremenho, ...
   Found op http://www.britannica.com/eb/a-z/e/47
   
   
2. 
   Estremenho
   Estremenho is the dialect of European Portuguese spoken in Coimbra and Lisbon, Portugal and is considered the most pure{Citation needed|date=July 2009} and correct{Citation needed|date=July 2009} form of Portuguese as it was the basis of Standard Portuguese to be taught{Citation needed|date=July 20...
   Found op http://en.wikipedia.org/wiki/Estremenho
   
   

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