S. Farid F. Mojtahedi and  Ali Khosravi and  Behnaz Naeimian and  S. Adel A. Hosseini,  Comparison of Different Techniques to Estimate Surface Soil Moisture.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2017, vol. 122(2). 98 - 106
    [viewed 04 May 2024]. Available from: https://publications.waset.org/pdf/10006180.