SILVA, Ricardo Augusto; CRESTE, José Eduardo; TIRITAN, Carlos Sérgio; GUERRA, Wellington Eduardo Xavier; ECKER, Arney Eduardo do Amaral. Nutritional diagnosis by Dris method of the cultivars coffee in the northern region of Paraná, Brazil. Coffee Science - ISSN 1984-3909, [S. l.], v. 10, n. 2, p. 204–213, 2015. Disponível em: https://coffeescience2.ufla.br/index.php/Coffeescience/article/view/853. Acesso em: 21 oct. 2026.