L. S. Zavodna and  J. Zavodny Pospisil,  A Model of Sustainability in the Accommodation Sector.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2016, vol. 117(9). 3174 - 3178
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10005477.