J. L. Oliver and  T. Agryzkov and  L. Tortosa and  J. Vicent and  J. Santacruz,  The Use of Network Theory in Heritage Cities.   journal   = {International Journal of Architectural and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2017, vol. 121(1). 21 - 26
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10006332.