WASET
    Zhizhong Jiang and  Peter Naudé and  Craig Comstock,  The Variation of Software Development Productivity 1995-2005 .   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2007, vol. 3(3). 692 - 696
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/14941.