translation.bs: Sofija radi na iskorištavanju škriljčanih rezervi kojima bi se, kako neki kažu, mogla obezbijediti potrošnja gasa u trajanju od tri stoljeća. [Ladislav Tsvetkov/SETimes]
translation.en: Sofia moves to tap shale reserves that some say could provide for three centuries worth of natural gas consumption. [Ladislav Tsvetkov/SETimes]