(EurActiv - 23/11/10; UPI, ITAR-TASS, Bloomberg, Reuters, RTTNews, Sofia news Agency, Informacijska agencija za naftu i plin - 22/11/10; Reuters, BBC, Eurasianet - 19/11/10)
(EurActiv - 23/11/10; UPI, ITAR-TASS, Bloomberg, Reuters, RTTNews, Sofia news Agency, Oil and Gas Information Agency - 22/11/10; Reuters, BBC, Eurasianet - 19/11/10)