Felix Baumann and  Aleksandar Milutinovic and  Dieter Roller,  Software Engineering Inspired Cost Estimation for Process Modelling.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 110(2). 576 - 586
    [viewed 23 April 2021]. Available from: https://publications.waset.org/pdf/10003773.