https://www.vedomosti.ru/library/news/2006/04/14/usloviya-oplaty-za-tranzit-rossijskogo-gaza-cherez-territoriyu-bolgarii-mogut-byt-peresmotreny?utm_source=telegram&utm_campaign=share&utm_medium=social&utm_content=usloviya-oplaty-za-tranzit-rossijskogo-gaza-cherez-territoriyu-bolgarii-mogut-byt-peresmotreny