M. Azadbakht and  B. Azadbakht and  R. Janzade Galogah and  A. Kiapei and  H. Jafari ,  Soil Properties after Plowing with Vertical and Horizontal Axis Rotavator  .   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2014, vol. 85(1). 61 - 65
    [viewed 25 February 2021]. Available from: https://publications.waset.org/pdf/9997571.