Ignatov I. Review of different types of mountain springs and mineral waters from Bulgaria based on their natural origin and health benefits. Med. perspekt. [інтернет]. 22, Грудень 2023 [цит. за 05, Грудень 2025];28(4):199-206. доступний у: https://journals.uran.ua/index.php/2307-0404/article/view/294236