M. Haddadzade and  M. R. Razfar and  M. Farahnakian,  Integrating Process Planning and Scheduling for Prismatic Parts Regard to Due Date.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2009, vol. 27(3). 248 - 251
    [viewed 22 January 2020]. Available from: https://publications.waset.org/pdf/3495.