(Reuters, DPA - 19/02/10; Standart, Dnevnik, Focus News Agency, The Banker -16/02/10; Bulgarian Energy Holding, National Electric Company, State Energy and Water Regulatory Commission)
(Reuters, DPA - 19/02/10; Standart, Dnevnik, Focus Haber Ajansı, The Banker -16/02/10; Bulgarian Energy Holding, Ulusal Elektrik İşletmeleri, Devlet Enerji ve Su Düzenleme Komisyonu)