WASET
    Kashif Irfan and  Fahad Shahbaz Khan and  Tehseen Zia and  M. A. Anwar,  Weight-Based Query Optimization System Using Buffer.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2008, vol. 13(1). 130 - 132
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/6013.