R. Oonsivilai and  N. Chaijareonudomroung and  Y. Huantanom and  A. Oonsivilai,  Extraction Condition of Echinocactus grusonii.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2010, vol. 46(10). 721 - 724
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/15766.