Y. K. Lin and  H. T. Hsieh and  F. Y. Hsieh,  Unrelated Parallel Machines Scheduling Problem Using an Ant Colony Optimization Approach.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2012, vol. 68(8). 1727 - 1732
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/15712.