Angelova, Gergana, and Ivan Yonov. “FROM GREEN TO LUXURY HOSPITALITY:THE CASE OF ZORNITZA FAMILY ESTATE RELAIS & CHATEAUX”. KNOWLEDGE - International Journal , vol. 73, no. 1, Dec. 2025, pp. 77-83, https://ojs.ikm.mk/index.php/kij/article/view/7889.