@article{rupp_1946,  title={O rôlo-facas na compressibilidade dos solos},  volume={6},  ISSN={0006-8705},  url={https://doi.org/10.1590/S0006-87051946000500002},  DOI={10.1590/S0006-87051946000500002},  number={5},  journal={Bragantia},  publisher={Instituto Agronômico de Campinas},  author={Rupp, L. S.},  year={1946},  pages={203–215} }