MIZYUK, B., and IRYNA MELNYK. “PARADIGMATIC APPROACH TO SYSTEM MANAGEMENT IN THE HOSPITALITY INDUSTRY”. Herald of Khmelnytskyi National University. Economic Sciences, vol. 294, no. 3, Mar. 2021, pp. 148-53, https://doi.org/10.31891/2307-5740-2021-294-3-21.