Villibor, Geice Paula, Fábio Lúcio Santos, e Marconi Ribeiro Furtado Júnior. 2014. “Mechanical Vibrations at the Seat Base of a Tractor During the Subsoiling Operation”. Agrarian 8 (27):64-73. https://ojs.ufgd.edu.br/index.php/agrarian/article/view/3180.