HÖFIG, P.; ARAUJO-JUNIOR, C. F. Terrain slope classes and potential for mechanization to coffee plantation in the state of Paraná. Coffee Science - ISSN 1984-3909, [S. l.], v. 10, n. 2, p. 195–203, 2015. Disponível em: https://coffeescience.ufla.br/index.php/Coffeescience/article/view/833. Acesso em: 14 jan. 2025.