WASET
    Ana Cristina GarcĂ­a-Luna Romero,  Nature of Cities: Ontological Dimension of the Urban.   journal   = {International Journal of Urban and Civil Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2021, vol. 171(3). 148 - 151
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10011897.