Roelien Goede,  Improved Data Warehousing: Lessons Learnt from the Systems Approach.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2011, vol. 54(6). 652 - 661
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/12111.