Свідло, К., Л. Мамченко, and А. Соколенко. “ENVIRONMENTAL CERTIFICATION AS A FACTOR INCREASING THE COMPETITIVENESS OF THE HOTEL AND RESTAURANT BUSINESS”. Modern Engineering and Innovative Technologies, vol. 2, no. 23-02, Oct. 2022, pp. 40-46, doi:10.30890/2567-5273.2022-23-02-021.