Свідло, Карина, Людмила Мамченко, and Анна Соколенко. “ENVIRONMENTAL CERTIFICATION AS A FACTOR INCREASING THE COMPETITIVENESS OF THE HOTEL AND RESTAURANT BUSINESS”. Modern engineering and innovative technologies 2, no. 23-02 (October 30, 2022): 40–46. Accessed April 30, 2024. https://www.moderntechno.de/index.php/meit/article/view/meit23-02-021.