Raif Parlakkaya and  Mustafa Nihat Demirci and  Mehmet Nuri Salur,  Environmental Accounting Practice: Analyzing the Extent and Qualification of Environmental Disclosures of Turkish Companies Located in BIST-XKURY Index.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2016, vol. 115(7). 2395 - 2400
    [viewed 04 July 2020]. Available from: https://publications.waset.org/pdf/10004980.