These include 4% of El Mundo, a newspaper which has been highly critical of the socialist government, and Antena Tres, a television channel.
Radio Antena M can be heard, though getting the connection is frequently quite difficult.Unsurprisingly, news direct from Kosovo is hard to come by.
Some have been quick to point out that Mr Voiculescu owns both Antena 1 (a generalist channel) and Antena 3 (a news channel).
TVE-1, the state's main channel, gets about 25% of viewers, private Antena 3 and Tele-5 around 20% apiece.
And Portugal's Media Capital, which owns a television network, reduced its losses thanks to stronger advertising sales during a period that is usually its quietest of the year.Rising revenues have lifted the shares of Spain's Antena 3 and Telecinco, both of which became stockmarket-listed during the past year.
Commentators on Antena 3, a news channel, which has been ferociously critical of Mr Basescu, have lambasted an Olympic medal winner for stating she would not go vote in the referendum.
Susana Guasch, a Spanish reporter for native broadcaster Antena 3, tweeted: "Run-in between Ibra and Cesc on leaving the stadium.
The Portuguese winger found himself buttonholed by one interviewer in particular from the Spanish broadcasters Antena 3.
"Such words should be condemned; they do not belong on a football pitch," Romania's foreign minister, Titus Corlatean, told the news channel Antena 3, trying to take the sting out of the match.
