@article{weirich neto_borghi_sverzut_mantovani_gomide_newes_2006,  title={Análise multivariada da resistência do solo à penetração sob plantio direto},  volume={36},  ISSN={0103-8478},  url={https://doi.org/10.1590/S0103-84782006000400022},  DOI={10.1590/S0103-84782006000400022},  number={4},  journal={Ciência Rural},  publisher={Universidade Federal de Santa Maria},  author={Weirich Neto, Pedro Henrique and Borghi, Elaine and Sverzut, Claudio Bianor and Mantovani, Evandro Chartuni and Gomide, Reinaldo Lúcio and Newes, Walter Luiz de Castro},  year={2006},  month={Jul},  pages={1186–1192} }