Philipowski, João Filipe, Renato Antonio Dedecek, and Moacir José Sales Medrado. “Influence of Different Winter Soil Cover Plants and Soil Tillage Systems on Erva-Mate (Ilex Paraguariensis St. Hil.) Productivity, in Ponta Grossa,PR”. Pesquisa Florestal Brasileira, no. 48 (June 30, 2004): 3–13. Accessed September 13, 2026. https://pfb.sede.embrapa.br/pfb/article/view/1592.