R. G. Ariyawansa and  M. A. N. R. M. Perera,  Socio-Economic Insight of the Secondary Housing Market in Colombo Suburbs: Seller’s Point of Views.   journal   = {International Journal of Architectural and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2018, vol. 142(10). 982 - 986
    [viewed 15 December 2019]. Available from: https://publications.waset.org/pdf/10009654.