Rosshairy Abd Rahman and  Chooi-Leng Ang and  Razamin Ramli,  Investigating Feed Mix Problem Approaches: An Overview and Potential Solution.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2010, vol. 46(10). 750 - 758
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10320.