Sohrab Mahmoodi and  Ali Rahimi,  Estimation of Critical Period for Weed Control in Corn in Iran.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2009, vol. 25(1). 27 - 32
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/12018.