Adilova DU. PROFESSIONAL SELF-REGULATION AND HARMONISED HOTEL CLASSIFICATION AS INSTRUMENTS FOR IMPROVING TOURISM SERVICE QUALITY MANAGEMENT: THE EXPERIENCE OF GERMANY AND IMPLICATIONS FOR UZBEKISTAN. EST [Internet]. 2026 Oct. 31 [cited 2026 Nov. 11];3(10):632-9. Available from: https://econoscitech-integration-journal.uz/index.php/journal/article/view/928