SAHAIDAK M. PARTNERSHIP AND DIVERSIFICATION AS FACTORS IN THE FORMATION OF A SERVICE-ORIENTED BUSINESS MODEL OF HOTEL AND RESTAURANT BUSINESS ENTERPRISES. Herald of Khmelnytskyi National University. Economic sciences [Internet]. 2023 Jun. 29 [cited 2026 Jan. 28];320(4):271-7. Available from: https://heraldes.khmnu.edu.ua/index.php/heraldes/article/view/470