Pirom Thangchitpianpol and  Suttipong Jumroonrut,  Production Planning for Animal Food Industry under Demand Uncertainty.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2014, vol. 91(7). 2237 - 2240
    [viewed 21 January 2022]. Available from: https://publications.waset.org/pdf/9998855.