https://www.vedomosti.ru/library/news/2009/02/06/bolgariya-ne-budet-predyavlyat-rossii-pretenzii-za-nedopostavlennyj-gaz?utm_source=telegram&utm_campaign=share&utm_medium=social&utm_content=bolgariya-ne-budet-predyavlyat-rossii-pretenzii-za-nedopostavlennyj-gaz