WASET
    Chih-Hsiang Chang and  Liang-Chien Lee and  Shu-Ling Wu,  The Investors- Reaction to Investment Rating Change Announcements.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2012, vol. 66(6). 1135 - 1140
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/14598.