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WikiPedia: ETECSA http://juriscuba.com/organismos-estatales-2/comuni... http://today.reuters.com/news/articleinvesting.asp... http://www.cubacel.cu/ http://www.etecsa.cu/ http://www.juventudrebelde.cu/cuba/2013-05-27/cuba... https://www.14ymedio.com/cienciaytecnologia/Etecsa... https://www.bloomberg.com/news/2011-01-31/telecom-... https://www.cubaenmiami.com/monopolio-cubano-etecs... https://www.nytimes.com/2013/05/29/world/americas/... https://www.seattletimes.com/business/cuba-legaliz...