@article{bacchi_reichardt_oliveira_nielsen_1998,  title={Gamma-ray beam attenuation as an auxiliary technique for the evaluation of the soil water retention curve},  volume={55},  ISSN={0103-9016},  url={https://doi.org/10.1590/S0103-90161998000300019},  DOI={10.1590/S0103-90161998000300019},  number={3},  journal={Scientia Agricola},  publisher={Escola Superior de Agricultura "Luiz de Queiroz"},  author={BACCHI, O.O.S. and REICHARDT, K. and OLIVEIRA, J.C.M. and NIELSEN, D.R.},  year={1998},  pages={498–502} }