Ghulam Zakria and  Zailin Guan  and Yasser Riaz Awan and  Wan Lizhi,  Stochastic Scheduling to Minimize Expected Lateness in Multiple Identical Machines.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2010, vol. 37(1). 80 - 84
    [viewed 17 October 2019]. Available from: https://publications.waset.org/pdf/3970.