Yung-Pin Cheng and  Ching-Huei Wang,  Design as Contract and Blueprint – Tackling Maturity Level 1 Software Vendors in an e-School Project.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2009, vol. 35(11). 2561 - 2567
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/12502.